利用Gleeble 3800型热模拟试验机对TC17钛合金在两相区进行了等温恒应变速率的热压缩试验，分析了压缩失稳的变形条件;采用光学显微镜和扫描电子显微镜研究了压缩变形后试样的显微组织。结果表明：TC17钛合金在热变形温度750 ℃、应变速率不小于1 s-1、变形量不小于45%下进行热压缩时，会发生变形失稳；变形失稳后，随变形量和应变速率增加，其失稳区变窄，组织变形不均匀性加剧；失稳区主要是β转变组织变形。
所属栏目
物理模拟与数值模拟
收稿日期
2015/1/212015/10/8
作者单位
刘继雄:宝钛集团有限公司， 宝鸡 721014
岳 旭:宝钛集团有限公司， 宝鸡 721014
杨 军:宝钛集团有限公司， 宝鸡 721014
王永强:宝钛集团有限公司， 宝鸡 721014
张平辉:宝钛集团有限公司， 宝鸡 721014
王鼎春:宝钛集团有限公司， 宝鸡 721014
高 颀:宝钛集团有限公司， 宝鸡 721014
备注
刘继雄(1983－),男,湖北孝感人,工程师,博士.
引用该论文:
LIU Ji-xiong,YUE Xu,YANG Jun,WANG Yong-qiang,ZHANG Ping-hui,WANG Ding-chun,GAO Qi.Instability Behavior and Microstructure Characteristic of TC17 Titanium Alloy Deformation on Two-Phase Region[J].Materials for mechancial engineering,2015,39(12):71～74
刘继雄,岳 旭,杨 军,王永强,张平辉,王鼎春,高 颀.刘继雄(1983-)，男，湖北孝感人，工程师，博士。TC17钛合金两相区变形时的失稳行为及组织特征[J].机械工程材料,2015,39(12):71～74
参考文献
【1】
BOYER R, WELSCH G, COLLINGS E W. Materials Properties Handbook:Titanium Alloys［M］.Ohio:ASM,1994:453-463.
【2】
董显娟,鲁世强,王克鲁,等.基于Murty判据的粗片层状TA15钛合金β相区锻造工艺参数优化［J］.机械工程材料, 2009,33(7):67-70.
【3】
曾卫东,周义刚,俞汉清.Ti-17的高温压缩行为［J］.西北工业大学学报, 1996,14(2):165-169.
【4】
WANG Kai-xuan,ZENG Wei-dong, ZHAO Yong-qing, et al. Dynamic globularization kinetics during hot working of Ti-17 alloy with initial lamellar microstructure［J］. Materials Science and Engineering: A, 2010,527(10/11):2559-2566.
【5】
MA Xiong, ZENG Wei-dong, WANG Kai-xuan. The investigation on the unstable ow behavior of Ti17 alloy in α+β phase eld using processing map［J］. Materials Science and Engineering: A, 2012,550:131-137.
【6】
XU Jian-wei, ZENG Wei-dong, JIA Zhi-qiang, t al. rediction of static globularization of Ti-17 alloy with starting lamellar microstructure during heat treatment［J］. Computational Materials Science, 2014,92:224-230.
【7】
XUE Jian-wei, ZENG Wei-dong, JIA Zhi-qiang, t al.Static globularization kinetics for Ti-17 alloy with initial lamellar microstructure［J］. Journal of Alloys and Compounds, 2014, 603:239-247.
【8】
LIU Jiang-lin, ZENG Wei-dong, LAI Yun-jin, t al. onstitutive model of Ti17 titanium alloy with lamellar-type initial microstructure during hot deformation based on orthogonal analysis［J］. Materials Science and Engineering: A, 2014,597:387-394.
【9】
LI H, LI M Q, HAN T, t al.The deformation behavior of isothermally compressed Ti-17 titanium alloy in α+β eld［J］. Materials Science and Engineering: A, 2012,546:40-45.
【10】
LUO J, LI L, LI M Q. The flow behavior and processing maps during the isothermal compression of Ti17 alloy［J］. Materials Science and Engineering: A, 2014,606:165-174.
【11】
NING Y, FU M W, HOU H, t al.Hot deformation behavior of Ti-5.0Al-2.40Sn-2.02Zr-3.86Mo-3.91Cr alloy with an initial lamellar microstructure in the α+β phase eld［J］. Materials Science and Engineering:A,2011,528(3):1812-1818.
【12】
WANG T, GUO H, TAN L,et al.Beta grain growth behaviour of TG6 and Ti17 titanium alloys［J］. Materials Science and Engineering: A, 2011,528(21):6375-6380.
【13】
TARIN P, FERNANDEZ A L, SIMON A G, t al.Transformations in the Ti-5Al-2Sn-2Zr-4Mo-4Cr(Ti-17) alloy and mechanical and microstructural characteristics［J］. Materials Science and Engineering:A,2006,438/440:364-368.
【14】
BRIOTTET L, JONAS J J, MONTHEILLET F. A mechanical interpretation of the activation energy of high temperature deformation in two phase materials［J］. Acta Mater,1996,44:1665-1672.
