TA15合金应变速率循环超塑性研究  

Superplasticity of TA15 Titanium Alloy Induced by Strain Rate Cycling

作　　者：吴晨刚[1,2,3] 王高潮[2] 肖斌[1] 耿启冬[2] 

机构地区：[1]江西理工大学南昌校区,江西南昌330013 [2]南昌航空大学,江西南昌330063 [3]桂林理工大学材料与化学工程系,广西桂林541004

出　　处：《钛工业进展》2009年第5期14-17,共4页Titanium Industry Progress

基　　金：航空科学基金资助项目(BA2005801127)

摘　　要：采用应变速率循环法（基于时间间隔）研究了TA15合金的超塑性。在变形温度分别为850，900，950℃，应变速率范围为5×10^-6～5×10^-4s^-1的实验条件下，考察了工艺参数对流变应力、m值及其超塑性的影响。结果表明，TA15合金具有较好的超塑性，最佳变形温度为900℃，伸长率为846％。The superplasticity of TA15 alloy was studied by the SRC （strain rate cycling） method （based on time）. The influence of processing parameters on flow stress, strain rate sensitivity （m value） and its superplasticity was investigated, in the strain rate range of 5 × 10^ -6 ～ 5 × 10^-4 s^-1, and under the temperature of 850, 900 and 950 ℃ respectively. The results show that TA15 alloy has good superplasticity. The best deformation temperature of the alloy is 900 ℃, and its elongation could reach 846% under this experimental condition.

关 键 词：应变速率循环 TA15 高温拉伸 超塑性 应变速率敏感性指数 

分 类 号：TG146.23[一般工业技术—材料科学与工程]