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Influences of Austenization Temperature and Annealing Time on Duplex Ultrafine Microstructure and Mechanical Properties of Medium Mn Steel 被引量:8
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作者 Chang WANG Wen-quan CAO +3 位作者 Yun HAN Cun-yu WANG Chong-xiang HUANG Han DONG 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2015年第1期42-47,共6页
A duplex ultrafine microstructure in a medium manganese steel (0.2C-5Mn) was produced by austenite re- verted transformation annealing (ART-annealing). The microstructural evolution during annealing was examined b... A duplex ultrafine microstructure in a medium manganese steel (0.2C-5Mn) was produced by austenite re- verted transformation annealing (ART-annealing). The microstructural evolution during annealing was examined by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD). Based on the microstructure examination, it was found that some M3C type carbides appeared in the martensitic matrix at the beginning of the ART-annealing. But with further increasing annealing time, these carbides would be dissolved and finally disappeared. Meanwhile, the austenite lath was developed in the ART-annealing process and the volume fraction of austenite increosed with the increase of the annealing time, which resulted in a duplex microstructure con- sisting of ultrafine-grained ferrite and large fraction of reverted austenite after long time annealing. The mechanical property examinations by uniaxial tensile tests showed that ART-annealing (6 h, 650 ℃) resulted in a superhigh product of strength to elongation up to 42 GPa ·%. 展开更多
关键词 medium Mn steel microstructure mechanical property austenization ANNEALING
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Effect of austenization temperature on the microstructure evolution of the medium manganese steel (0.2C-5Mn) during ART-annealing 被引量:1
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作者 Jie SHI Haifeng XU +5 位作者 Jie ZHAO Wenquan CAO Chang WANG Cunyu WANG Jian LI Han DONG 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2012年第2期111-123,共13页
Microstructure evolution during ART-annealing (austenite reverted transformation annealing) of 0.2C-5Mn steel processed by austenitation at different temperatures was examined by SEM, TEM and XRD. It was demonstrate... Microstructure evolution during ART-annealing (austenite reverted transformation annealing) of 0.2C-5Mn steel processed by austenitation at different temperatures was examined by SEM, TEM and XRD. It was demonstrated that the initial mi- crostructures resulted from austenization at different temperatures strongly affect the microstructure evolution during followed ART-annealing, even the ultrafine grained ferrite/austenite duplex structure with about 30% austenite could be obtained af- ter long time ART-annealing in all cases. Austenization in the intercritical region (between Ad and At3) gave a duplex structure after quenching, which was nearly not affected by followed annealing process. However, high temperature austenization (above A^3) resulted in a full martensite structure after quenching, which gradually transformed into a ferrite/austenite duplex structure during the following anneal- ing process. Based on the analysis of austenite fraction and carbon concentrate, it was found that not only carbon partitioning but also manganese paxtitioning in the austenite affected the stability of austenite and even dominated the development of lamellar ferrite and austenite duplex structure during intercritical annealing with different times. At last an austenite lath nucleation and thickening model was pro- posed to describe the microstructure evolution of medium mangenese steel during ART-annealing. 展开更多
关键词 austenization temperature ART-annealing Microstructure evolution Carbon and manganese partitioning Lamellar duplex structure
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Influence of austenization temperature on the erosion behavior of austempered ductile irons 被引量:1
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作者 L.C. Chang L C. Hsui +1 位作者 L.H. Chen S.T. Lui 《Journal of University of Science and Technology Beijing》 CSCD 2008年第1期29-33,共5页
The erosion behavior of austempered ductile irons austenized at different temperatures was studied. The results indicate that the erosion rate well correlates with the mechanical properties. At high impact angles, inc... The erosion behavior of austempered ductile irons austenized at different temperatures was studied. The results indicate that the erosion rate well correlates with the mechanical properties. At high impact angles, increasing ductility and mechanical energy density results in decreasing erosion rate, whereas increasing hardness reduces the erosion rate at low impact angles. 2008 University of Science and Technology Beijing. All rights reserved. 展开更多
关键词 austempered ductile iron EROSION mechanical properties austenization
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EFFECT OF ELECTRIC FIELD ON THE AUSTENIZATION OF A LOW CARBON STEEL
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作者 X.T.Liu J.Z.Cui 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2004年第5期689-693,共5页
With an electric field during austenitizing, the martensite transformation of the low carbon steel was promoted, and more martensite were obtained. The electric field promotes the homogeneity of carbon, and reduces th... With an electric field during austenitizing, the martensite transformation of the low carbon steel was promoted, and more martensite were obtained. The electric field promotes the homogeneity of carbon, and reduces the free energy of austenite. The critical neuclus r* and the critical driving force G* responsible for the nucleation of proeutectoid ferrite were increased. As a result of which the diffusion controlled proeuctoid ferrite transformation was retarded and the hardenability was improved. 展开更多
关键词 austenization electric field proeutectoid ferrite HARDENABILITY
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寻访简·奥斯汀中心
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作者 史珂 《疯狂英语(初中天地)》 2025年第5期13-17,共5页
这座位于英国巴斯的简·奥斯汀中心让参观者领略到了《傲慢与偏见》作者简·奥斯汀笔下的风情与智慧。Jane Austen,a famous English writer,was born in December,1775.Although she died at just forty-two years of age,she ... 这座位于英国巴斯的简·奥斯汀中心让参观者领略到了《傲慢与偏见》作者简·奥斯汀笔下的风情与智慧。Jane Austen,a famous English writer,was born in December,1775.Although she died at just forty-two years of age,she completed six novels in her lifetime,which have been translated into dozens of languages,sold tens of millions of copies and have been adapted for television and film. 展开更多
关键词 Pride Prejudice film adaptation Jane Austen English literature TRANSLATION BATH novel
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Austenite Grain Refinement and Isothermal Growth Behavior in a Low Carbon Vanadium Microalloyed Steel 被引量:25
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作者 Geng-wei YANG Xin-jun SUN +2 位作者 Qi-long YONG Zhao-dong LI Xiao-xian LI 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2014年第8期757-764,共8页
The austenite grain refinement through control of the grain growth during reheating process after thermomechanical controlled process (TMCP) in a vanadium microalloyed steel was achieved. The formation of ultra-fine... The austenite grain refinement through control of the grain growth during reheating process after thermomechanical controlled process (TMCP) in a vanadium microalloyed steel was achieved. The formation of ultra-fine grained austenite was attributed to the high density of austenite nucleation at the ferrite/martensite structure and to the inhibition of austenite growth by (Ti~ V)C particles at the relatively low reheating temperature. Corresponding with the precipitation behavior of (Ti,V)C with temperature, the growth behavior of austenite in the vanadium mi- croalloyed steel could be divided into two regions. At lower reheating temperature, austenite grains grew slowly, and ultra-fine grained austenite smaller than 5 ~m was successfully obtained. By contrast, the austenite grains grew rap- idly at high temperature due to the dissolution of (Ti, V)C particles. According to the measured and predicted results of austenite growth kinetics, two models were developed to describe the growth behavior of austenite grains in two different temperature regions, and the apparent activation energy Qapp for grain growth was estimated to be about 115 and 195 kJ/mol, respectively. 展开更多
关键词 grain refinement austenization (Ti V) C precipitationl grain growth AUSTENITE
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Effect of continuous annealing parameters on the mechanical properties and microstructures of a cold rolled dual phase steel 被引量:12
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作者 Shuang Kuang Yong-lin Kang +1 位作者 Hao Yu Ren-dong Liu 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2009年第2期159-164,共6页
A cold rolled dual phase (DP) steel with the C-Si-Mn alloy system was trial-produced in the laboratory, utilizing a Gleeble-3800 thermal simulator. The effects of continuous annealing parameters on the mechanical pr... A cold rolled dual phase (DP) steel with the C-Si-Mn alloy system was trial-produced in the laboratory, utilizing a Gleeble-3800 thermal simulator. The effects of continuous annealing parameters on the mechanical properties and microstructures of the DP steel were investigated by mechanical testing and microstructure observation. The results show that soaking between 760 and 820℃ for more than 80 s, rapid cooling at the rate of more than 30℃/s from the quenching temperature between 620 and 680℃, and overaging lower than 300℃ are beneficial for the mechanical properties of DP steels. An appropriate proportion of the two phases is one of the key factors for the favorable properties of DP steels. If the volume fraction of martensite and, thereby, free dislocations are deficient, the tensile strength and n value of DP steels will decrease, whereas, the yield strength will increase. But if the volume fraction of martensite is excessive to make it become a dominant phase, the yield and tensile strength will increase, whereas, the elongation will decrease obviously. When rapid cooling rate is not fast enough, pearlite or cementite will appear, which will degrade the mechanical properties. Even though martensite is sufficient, if it is decomposed in high temperature tempering, the properties will he unsatisfied. 展开更多
关键词 austenization intercritical annealing dual phase steel cold rolling DIFFUSION
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Cellular automaton modeling of austenite formation from ferrite plus pearlite microstructures during intercritical annealing of a C-Mn steel 被引量:2
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作者 Chunni Jia Chengwu Zheng Dianzhong Li 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2020年第12期1-9,共9页
A mesoscopic cellular automaton model was developed to study the microstructure evolution and solute redistribution of austenization during intercritical annealing of a C-Mn steel. This model enables a depiction of th... A mesoscopic cellular automaton model was developed to study the microstructure evolution and solute redistribution of austenization during intercritical annealing of a C-Mn steel. This model enables a depiction of three-stage kinetics of the transformation combined with the thermodynamic analysis:(1) the rapid austenite growth accompanied with pearlite degeneration until the pearlite dissolves completely;(2) the slower austenite growth into ferrite with a rate limiting factor of carbon diffusion in austenite;and(3) the slow austenite growth in control of the manganese diffusion until the final equilibrium reached for ferrite and austenite. The effect of the annealing temperature on the transformation kinetics and solute partition is also quantitatively rationalized using this model. 展开更多
关键词 austenization Intercritical annealing C-Mn steels Cellular automaton Mesoscale modeling
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Intermetallic Evolution of Al–Si-Coated Hot Stamping Steel During Modified Electrically Assisted Rapid Heating 被引量:2
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作者 Kieu-Anh Dinh Sung-Tae Hong +2 位作者 Tien Viet Luu Moon-Jo Kim Heung Nam Han 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2018年第12期1327-1333,共7页
Modified electrically assisted(EA) rapid heating of Al–Si-coated hot stamping steel is suggested, and the intermetallic evolution in the coating during heating is experimentally investigated. In the modified EA rapid... Modified electrically assisted(EA) rapid heating of Al–Si-coated hot stamping steel is suggested, and the intermetallic evolution in the coating during heating is experimentally investigated. In the modified EA rapid heating, a continuous electric current for a suitable duration is applied to a specimen to heat it to a temperature slightly below the melting temperature of the coating. The temperature of the specimen is then kept constant for a specified dwell time. The result of the microstructural analysis shows that the modified EA rapid heating could effectively increase the thickness of the intermetallic layer between the coating and steel substrate much faster than conventional furnace heating and induction heating. The effectiveness of EA rapid heating may be due to the athermal effect of the electric current on the mobility of atoms, in addition to the well-known resistance heating effect. EA rapid heating also provides a technical advantage in that partial austenization can be easily achieved by properly placing the electrodes, as demonstrated in the present study. 展开更多
关键词 Hot stamping Electrically assisted rapid heating Partial austenization Al–Si-coated hot stamping steel
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两个务实的人中间的务实婚姻 --析《傲慢与偏见》(英文)
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作者 陈谦红 陈炳丽 《思想战线》 CSSCI 北大核心 2010年第S1期331-333,共3页
Jane Austen begins Pride and Prejudice with "It is a truth universally acknowledged that, a single man in possession of a good fortune, must be in want of a wife."Hence, there is no doubt that marriage will ... Jane Austen begins Pride and Prejudice with "It is a truth universally acknowledged that, a single man in possession of a good fortune, must be in want of a wife."Hence, there is no doubt that marriage will be a central concern of Pride and Prejudice. In this novel, Austen depicted several types of marriage: Elizabeth and Darcy’s marriage which emphasized equality and independence, Jane and Bingley’s marriage for love’s sake, Charlotte Lucas and Mr. Collins’ practical marriage and the rash marriage between Lydia and Wickham. This thesis is focused on the practical marriage between Charlotte Lucas and Mr. Collins while further explores the reasons behind their pragmatism. 展开更多
关键词 PRACTICAL MARRIAGE OLD maid AUSTEN
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On Quality of Marriages in Pride and Prejudice
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作者 胡新 石志华 《海外英语》 2014年第6X期184-185,191,共3页
Pride and Prejudice is the masterpiece of Jane Austen.In her novel,through description of four marriages,Jane Austen expressed such views on marriage:marriages based on economics or superficial qualities such as lust,... Pride and Prejudice is the masterpiece of Jane Austen.In her novel,through description of four marriages,Jane Austen expressed such views on marriage:marriages based on economics or superficial qualities such as lust,money,and appearance will inevitably lead to unhappiness,while those based on mutual understanding and true love will be happy and stable. 展开更多
关键词 JANE AUSTEN PRIDE and PREJUDICE MARRIAGE
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A Study of Romantic Tendency in Jane Austen's works——A Comparison between Sense and Sensibility and Persuasion
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作者 具东梅 《疯狂英语(理论版)》 2017年第4期165-166,共2页
Sense and Sensibility and Persuasion is Jane Austen's first and last published works respectively, which are read widely all over the world. Austen proclaims that feeling should be governed by reason in Sense and ... Sense and Sensibility and Persuasion is Jane Austen's first and last published works respectively, which are read widely all over the world. Austen proclaims that feeling should be governed by reason in Sense and Sensibility and that reason should be compatible with feeling in Persuasion. This paper attempts to explore romantic tendency in Austen's works according to the comparison and contrast between her two novels. Through comparison and contrast, we can see the transformation of Marianne from a lady of sensibility to a sensible lady and the growth of Anne into a lady with romance. 展开更多
关键词 Jane Austen FEELING REASON romantic tendency
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Effects of Austenizing Time on Wear Behavior of D6 Tool Steel After Deep Cryogenic Treatment 被引量:5
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作者 A Akhbarizadeh M A Golozar +1 位作者 A Shafeie M Kholghy 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2009年第6期29-32,共4页
The effects of the prior austenite grain size in deep cryogenic treatment on the hardness, the structural change and the wear resistance of D6 tool steel were investigated. The wear resistance of the cryogenically tre... The effects of the prior austenite grain size in deep cryogenic treatment on the hardness, the structural change and the wear resistance of D6 tool steel were investigated. The wear resistance of the cryogenically treated samples was determined using the pin-on-disk wear machine. The microstructural characteristics and phases present in heat treated samples were determined using SEM and XRD techniques. The results showed that the retained austenite is completely transformed to martensite during the cryogenic treatment. Besides, there is an optimum grain size of which the maximum wear resistance and hardness are obtained. 展开更多
关键词 deep cryogenic treatment D6 austenizing time WEAR heat treatment
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Imperfect Emma:An Analysis of Emma's Character Flaws 被引量:1
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作者 何文婷 《海外英语》 2011年第7X期228-229,共2页
Emma is the heroine of one of the novels written by Jane Austen(1775-1817) who is among the most widely read writers in English literature.In the novel,also named Emma,Austen portrayed Emma as a young,pretty and smart... Emma is the heroine of one of the novels written by Jane Austen(1775-1817) who is among the most widely read writers in English literature.In the novel,also named Emma,Austen portrayed Emma as a young,pretty and smart gentlewoman,yet she was not a perfect or flawless character.She dose not seem to have any sense of her own limitations.Her self-conceit and meddling nature are two of her most fatal character flaws.In this article,we will give a detailed analysis of Emma's flaws supported by various incidents as the novel progresses.We will also find out the two major factors that contribute to develop these character flaws,which are the negative effects caused on her by people very close to her and also the society of her time. 展开更多
关键词 JANE AUSTEN EMMA CHARACTER FLAWS self-conceit meddling MATCHMAKING
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Austen's Persuasion and Her Views of Marriage and Love
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作者 王文钰 《International English Education Research》 2017年第4期111-113,共3页
Jane Austen was a famous female writer who lived in the period between the end of the 18th century and the beginning of the 19th century. When she was very young, she began to write about the life in the country and a... Jane Austen was a famous female writer who lived in the period between the end of the 18th century and the beginning of the 19th century. When she was very young, she began to write about the life in the country and all kinds of people living around; the basic theme of her most works was love between young men and women. These works not only inherited the traditional realism but also brought the climax of the works of realism in the 19th century, which blew a fresh breeze for the British literature in the early age the 19th century. All these had made a big difference of the development of English literature history. Persuasion was the last full-length novel of Jane Austin, in which she carefully described a nearly perfect female, Anne Eliot, who was beautiful and knowledgeable, and her love story with Wentworth. This paper will discuss Austen" s ideas of love and marriage and reasons of them mainly by analyzing Persuasion. 展开更多
关键词 AUSTEN view of marriage PERSUASION
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On Jane Austen's Views on marriage in Pride and Prejudice 被引量:1
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作者 MEI Zhi-xin 《海外英语》 2013年第1X期190-191,共2页
Marriage and love are eternal topics in our society.Among these works,Pride and Prejudice written by Jane Austen is welcomed all over the world.In this novel,Jane Austen expresses her own opinions about this problem t... Marriage and love are eternal topics in our society.Among these works,Pride and Prejudice written by Jane Austen is welcomed all over the world.In this novel,Jane Austen expresses her own opinions about this problem through the description of four couples'marriage,that is:marriage should not be determined by property and family status.It is unwise to marry without money,but it is also wrong to marry for money.The marriage settled by love is happy and ideal.Her views on marriage have great realistic significance to the modern society.This paper sums up Jane Austen's views on ideal marriage and its great realistic significance to the modern society from the analysis of four different types of marriage in the novel. 展开更多
关键词 PRIDE and PREJUDICE VIEWS on MARRIAGE JANE AUSTEN
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Jane Austen's Contradictory Feminist Views: An Analysis of Mr. Darcy in Pride and Prejudice
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作者 王思宇 《海外英语》 2015年第4期215-216,共2页
With the rise of feminist criticism from 1960 s, some feminists think Jane Austen has a feminist consciousness to some degree, but others think she has put too much emphasis on women's dependence on males and conf... With the rise of feminist criticism from 1960 s, some feminists think Jane Austen has a feminist consciousness to some degree, but others think she has put too much emphasis on women's dependence on males and conforms to the patriarchal society. This thesis aims to study Austen's contradictory feminist views through analyzing Mr. Darcy, one of the male characters in Pride and Prejudice. They have long been neglected, but they do have unique individuality and important positions. This thesis also aims to refute both the views mentioned above. 展开更多
关键词 JANE AUSTEN PRIDE and PREJUDICE feminism male characters
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Effects of Austenizing Temperature on Reprecipitation of BN
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作者 YIN Shi-ke A Rong Mitsuru Tanino 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2013年第9期99-104,共6页
Most of BN was precipitated around the spherical MnS and formed the compound of MnS and BN during the isothermal treatment at 850 ℃ after austenizing at 950-1050 ℃. Most of MnS was transformed into polygon when aust... Most of BN was precipitated around the spherical MnS and formed the compound of MnS and BN during the isothermal treatment at 850 ℃ after austenizing at 950-1050 ℃. Most of MnS was transformed into polygon when austenized at 1 150 ℃ or above, which could not be the nuclei of BN anymore. During the insulation process at 850 ℃, MnS kept the state of monomer. The compound of MnS and BN at earlier time was of fine polycrystalline in spherality and BN was formed as a plate-like monocrystal on a certain part of the polycrystalline when its dimension reached 0.6 μm. 展开更多
关键词 austenizing temperature BN repreeipitation isothermal treatment
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Conversation and Community Building in Jane Austen’s Novels
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作者 WANG Wan-ying 《Journal of Literature and Art Studies》 2019年第8期846-851,共6页
In recent years,much attention from home and abroad has been paid to the role that conversation plays in building community in Jane Austen’s novels.But the interpretations are merely confined to one or two of Austen... In recent years,much attention from home and abroad has been paid to the role that conversation plays in building community in Jane Austen’s novels.But the interpretations are merely confined to one or two of Austen’s novels.Actually,her six novels all have embodied her devotions to conversation and community building.Through literary language,she has fully demonstrated us how to shape community through proper conversation.Only the conversation that unites both sincerity and politeness is bound to help form peaceful and warm community. 展开更多
关键词 JANE AUSTEN CONVERSATION COMMUNITY BUILDING
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A Brief Analysis of the Language Features and Styles of Pride and Prejudice
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作者 DAI Mengfan 《Psychology Research》 2022年第10期862-864,共3页
Pride and Prejudice is a world famous novel,its storyline is fascinating,and language art is also indispensable.The way of speaking of the characters is also quite characteristic,with British humor,and the article als... Pride and Prejudice is a world famous novel,its storyline is fascinating,and language art is also indispensable.The way of speaking of the characters is also quite characteristic,with British humor,and the article also adopts a lot of irony style,which has the characteristics of British language,which is also unique at that time.The writer also hopes to use this expression to arouse people’s interest in reading,to understand the daily life of the people in the novel,and to ponder on emotions and life. 展开更多
关键词 Pride and Prejudice language style Jane Austen
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