文献类型：期刊文献

英文题名：Characterization and Modeling of Room-Temperature Compressive Creep Behavior of a Near alpha TA31 Titanium Alloy

作者：Yu, Weixin[1];Hou, Shusen[1];Yang, Zhijun[1];Zhang, Jinyong[2,3];Lang, Shaoting[1]

第一作者：Yu, Weixin

通讯作者：Yu, WX[1];Zhang, JY[2];Zhang, JY[3]

机构：[1]Xinxiang Univ, Sch Mech & Elect Engn, Xinxiang 453003, Henan, Peoples R China;[2]China Univ Min & Technol, Sch Mat Sci & Engn, Xuzhou 221008, Jiangsu, Peoples R China;[3]Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China

第一机构：新乡学院机电工程学院

通讯机构：[1]corresponding author), Xinxiang Univ, Sch Mech & Elect Engn, Xinxiang 453003, Henan, Peoples R China;[2]corresponding author), China Univ Min & Technol, Sch Mat Sci & Engn, Xuzhou 221008, Jiangsu, Peoples R China;[3]corresponding author), Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China.|[1107111]新乡学院机电工程学院;[11071]新乡学院;

年份：2020

卷号：10

期号：9

外文期刊名：METALS

收录：;Scopus(收录号：2-s2.0-85093895740);WOS:【SCI-EXPANDED(收录号:WOS:000580151000001)】；

基金：The research was funded by the Key Scientific Research Projects of Colleges and Universities in Henan Province (grant no. 19B430008), National Natural Science Foundation of China (grant no. 51801171), and Fundamental Research Funds for the Central Universities (2018GF13).

语种：英文

外文关键词：TA31 titanium alloy; compression tests; compressive creep behavior; creep model

摘要：The creep behavior of a near alpha TA31 titanium alloy under different compressive pressures has been studied by long-time (up to 500 h) compression tests at room temperature. The experimental results show that several thresholds of the compressive pressure were found to exist in the compression process of the TA31 alloy. When the compressive stress is lower than 0.80Rp0.2, there is no creep. There is a steady-state creep stage at the compressive stresses between 0.85Rp0.2 and 0.93Rp0.2, in which the strain rate is approximately a constant value. When the compressive stress reaches a threshold stress between 0.93Rp0.2 and 0.95Rp0.2, the sample enters the accelerating creep stage directly. The creep model of TA31 alloy has been built by using the regression method, from which the creep strain rate of TA31 titanium alloy in the steady-state creep stage under different compressive stress levels can be calculated. The mean difference between the calculated and the experimental value is 2.54%, indicating the creep model can efficiently predict the creep behavior of TA31 alloy.