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Microstructure evolution during reheating of extruded Mg-Gd-Y-Zr alloy into semisolid state 被引量：3

Microstructure evolution during reheating of extruded Mg-Gd-Y-Zr alloy into semisolid state
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摘要 The microstructure evolution of an extruded Mg-8.57Gd-3.72Y-0.54Zr （mass fraction, %, GW94） alloy during reheating into the semisolid state was investigated using optical microscopy （OM）, scanning electron microscopy （SEM）, and energy dispersive X-ray spectroscopy （EDX）. Typical semisolid microstructure with globular solid particles distributed in the liquid matrix is obtained over 600 ℃. The solid content of （Gd＋Y） in the primary a-Mg particles decreases with increasing the semisolid temperature. With the prolongation of isothermal holding time, the liquid fraction does not change significantly, while the grains grow up and spheroidize. Three methods used to determine the liquid fraction as a function of temperature, namely quantitative metallography on quenched microstructures, cooling curve thermal analysis, and thermodynamic calculations were further compared. The microstructure evolution of an extruded Mg-8.57Gd-3.72Y-0.54Zr (mass fraction, %, GW94) alloy during reheating into the semisolid state was investigated using optical microscopy (OM), scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDX).Typical semisolid microstructure with globular solid particles distributed in the liquid matrix is obtained over 600 °C.The solid content of (Gd+Y) in the primary α-Mg particles decreases with increasing the semisolid temperature.With the prolongation of isothermal holding time, the liquid fraction does not change significantly, while the grains grow up and spheroidize.Three methods used to determine the liquid fraction as a function of temperature, namely quantitative metallography on quenched microstructures, cooling curve thermal analysis, and thermodynamic calculations were further compared.
作者 高磊 梁松茂 陈荣石 韩恩厚
机构地区 State Key Laboratory for Corrosion and Protection Graduate School of Chinese Academy of Sciences
出处 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2010年第9期1585-1590,共6页 中国有色金属学报（英文版）
基金 Project(2007CB613704) supported by the National Basic Research Program of China
关键词 SEMISOLID Mg-Gd-Y alloy partial remelting microstructural evolution 半固态合金 挤压过程 组织演化 二次加热 锆合金 扫描电子显微镜 Gd 镁
分类号 TG379 [金属学及工艺—金属压力加工]
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参考文献19

  • 1高磊,梁松茂,陈荣石,韩恩厚.Correlation of recalescence with grain refinement of magnesium alloys[J].中国有色金属学会会刊：英文版,2008,18(A01):288-291. 被引量：1
  • 2L. Gao,R. S. Chen,E. H. Han.Microstructure and strengthening mechanisms of a cast Mg–1.48Gd–1.13Y–0.16Zr (at.%) alloy[J]. Journal of Materials Science . 2009 (16)
  • 3E. Tzimas,A. Zavaliangos.Evaluation of volume fraction of solid in alloys formed by semisolid processing[J]. Journal of Materials Science . 2000 (21)
  • 4M. C. Flemings.Solidification processing[J]. Metallurgical Transactions . 1974 (10)
  • 5BLANDIN J J,GIUNCHI D,SUERY M,EVANGELISTA E.Effect of thermal treatments on mechanical behaviour of thixoformed magnesium alloy. Materials Science and Technology . 2002
  • 6GAO L,CHEN R S,HAN E H.Thixoformability of a Mg-Gd-Y magnesium alloy and its mechanical properties. .
  • 7NAFISI S,EMADI D,GHOMASHCHI R.Semi solid metal processing:The fraction solid dilemma. Materials Science Engineering A Structural Materials Properties Microstructure and Processing . 2009
  • 8WANNASIN J,CANYOOK R,BURAPA R,SIKONG L,FLEMINGS M C.Evaluation of solid fraction in a rheocast aluminum die casting alloy by a rapid quenching method. Scripta Materialia . 2008
  • 9LIANG S M,CHEN R S,BLANDIN J J,SUERY M,HAN E H.Thermal analysis and solidification pathways of Mg-Al-Ca system alloys. Materials Science Engineering A Structural Materials Properties Microstructure and Processing . 2008
  • 10NAFISI S,GHOMASHCHI R.Grain refining of conventional andsemi-solid A356Al-Si alloy. Journal of Materials Processing Technology . 2006

二级参考文献18

  • 1LU L, DAHLE A K, STJOHN D H. Grain refinement efficiency and mechanism of aluminium carbide in Mg-Al alloys[J]. Scripta Materialia, 2005, 53: 517-522.
  • 2KIM Y M, YIM C D, YOU B S. Grain refining mechanism in Mg-Al base alloys with carbon addition[J]. Scripta Materialia, 2007, 55: 691-694.
  • 3MA Yue-qun, CHEN Rong-shi, HAN En-hou. Keys to improving the strength and ductility of the AZ64 magnesium alloy[J]. Materials Letters, 2007, 61: 2527-2530.
  • 4CAO P, QIAN M, ST JOHN D H. Grain refinement of commercial purity Mg-9%Al alloys by superheating[C]//NEELAMEGGHAM N R, KAPLAN H I, POWELL B R. Magnesium Technology 2005. TMS, Warrendale, 2005: 297-302.
  • 5HUANG Z H, LIANG S M, CHEN R S, HAN E H. Solidification pathways and constituent phases of Mg-Zn-Y-Zr alloys[J]. Journal of Alloys and Compounds, 2008, doi: 10.1016/j.jallcom.2008.01.034.
  • 6LIANG S M, CHEN R S, BLANDIN J J, SUERY M, HAN E H. Thermal analysis and solidification pathways of Mg-Al-Ca system alloys[J]. Mater Sci Eng A, 2008, 480:365-372.
  • 7CRUZ H, GONZALEZ C, JUAREZ A, HERRERA M, JUAREZ J. Quantification of the microconstituents formed during solidification by the Newton thermal analysis method[J]. Journal of Materials Processing Technology, 2006, 178: 128-134.
  • 8KROHN B R. Thermal analysis: metallurgical thumbprinting[J]. Modem Casting, 1985, 75(3): 21-25.
  • 9YEN C M, EVANS W J, NOWICKI R M, COLE G S. Measuring the quality of aluminum casting alloys with microprocessor-aided thermal analysis[J]. AFS Transactions, 1985, 93: 199-204.
  • 10NAFISI S, GHOMASHCHI R. Grain refining of conventional and semi-solid A356 Al-Si alloy[J]. Journal of Materials Processing Technology, 2006, 174:371- 383.

同被引文献39

  • 1Wang Y X, Zeng X Q, Ding W J. Efect of Al-Ti5 B master al- loy on the grain refinement of AZ31 magnesium alloy [J].Scripta Materialia, 2006, 54: 269.
  • 2Luo A, Pekguleryuz M O. Cast magnesium alloys for elevated temperature applications [ J ]. Journal of Materials Science, 1994. 29C20) : 5259.
  • 3Ping D H, Hono K, Nie J F. Atom probe characterization of plate-like precipitates in a Mg-RE-Zn-Zr casting alloy [J]. Scrip- ta Materialia, 2003, dS: 1017.
  • 4Bi G L, Wang L M, Li G Y, Jiang Z H. Microstructures and mechanical properties of Mg-2Y-1Mn-12Nd alloys fabricated by extrusion [J].Materials Science and Engineering A, 2010, (527) : 4383.
  • 5Li S S, Tang B, Zeng D B. Effects and mechanism of Ca on re- finement of AZ91D alloy [ J ]. J. Alloys Compd. , 2007, 437: 317.
  • 6Ben H G, Eliezer D, Shin K S. The relation between micro- structure and corrosion behavior of new Mg-A1-X alloys for trans- portation application [ J ]. Corrosion, Processes and Advanced Materials in Industry, 2010, (95) : 43.
  • 7Zhang J H, Niu X D, Qiu X, Liu K, Nan C M, Tang D X, Meng J. Effect of Yttrium-rich misch metal on the micmstruc- tures, mechanical properties and corrosion behavior of die cast AZ91 alloy [J].Journal of Alloys and Compounds, 2009, 471 - 322.
  • 8Yang J, Wang L D, Wang L M, Zhang It J. Microstructures and mechanical properties of the Mg4.5Zn-xGd (x = 0, 2, 3, 5) alloys [ J ]. Journal of Alloys and Compounds, 2008, 459 : 274.
  • 9Yao H, Li Y, Wee A T S. Passivity behavior of melt-spun Mg- Y alloys [ J]. Electrochirniea Aeta, 2003, (48) : 4197.
  • 10Le Q C, Zhang, Z Q, Shao Z W, Cui J Z, Xie Y. Microstruc- tures and mechanical properties of Mg-2% Zn4). 4% RE alloys[ J]. Transactions of Nonferrous Metals Society of China, 2010, 20 : 352.

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Transactions of Nonferrous Metals Society of China
2010年 第9期

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