摘要
采用高能球磨法和放电等离子烧结技术(SPS)制备了Ti_(2)AlNb合金,研究了不同烧结时间对Ti_(2)AlNb合金微观组织及力学性能的影响。利用扫描电子显微镜(SEM)和X射线衍射仪(XRD)对合金显微组织及物相结构进行表征,利用万能拉伸试验机对合金拉伸性能进行测试。结果表明,烧结时间不会改变合金的物相组成,不同烧结时间下所制备的Ti_(2)AlNb合金均由B2相、胞状α2相和针状O相组成;在烧结温度1000℃、烧结时间70min、压强50MPa条件下,Ti2AlNb合金中针状O相数量较多且分布均匀,其室温拉伸强度可达454.6 MPa。
Ti_(2)AlNb alloy was prepared by high-energy ball milling and spark plasma sintering(SPS),and the effects of different sintering time on microstructure and mechanical properties of Ti_(2)AlNb alloy were investigated.Scanning electron microscope(SEM)and X-ray diffractometer(XRD)were used to characterize the microstructure and phase composition of the alloy,and the tensile properties of the alloy were tested using a universal tensile testing machine.The results show that the sintering time can’t change the phase composition of the alloy,and the Ti2AlNb alloys prepared under different sintering time are composed of B2 phase,cytosolic α2 phase,and acicular O phase.Under the conditions of sintering temperature of 1000℃,sintering time of 70 min and pressure of 50 MPa,the acicular O phase distributes uniformly,and the number is larger,the tensile strength of the alloy reaches 454.6 MPa at room temperature.
作者
陈金坤
姜凤阳
思芳
杜予晅
王俊勃
刘江南
Chen Jinkun;Jiang Fengyang;Si Fang;Du Yuxuan;Wang Junbo;Liu Jiangnan(School of Materials Engineering,Xi’an Polytechnic University,Xi’an 710048,China;Western Superconducting Technologies Co.,Ltd.,Xi’an 710018,China)
出处
《钛工业进展》
CAS
2024年第3期9-13,共5页
Titanium Industry Progress
基金
西安市重大科技成果转化及产业化项目(20GXSF0010)
咸阳市重大科技创新专项(L2023-ZDKJ-JSGG-GY-011)。
