Investigation on the hot formability of TA15 titanium alloy sheet
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DOI码：10.1016/j.matdes.2016.01.010
发表刊物：Materials & Design
关键字：Forming limit curve; Sheet metal; TA15 titanium alloy; M-K model; Temperature
摘要：The hot formability of TA15 titanium alloy sheet was studied experimentally and theoretically. The hot uniaxial tensile tests were conducted for further investigation on hot formability. Based on the finite element models in different thermal conditions, the punch displacement-force curves were compared to test data to investigate the influence of sheet temperature distribution on limit strain. The simulation results indicated that the hot punch was essential for keeping the temperature of sheet center region. Meanwhile, the non-uniform sheet temperature distribution that the temperature of central sheet was higher than the one at sheet edge, was positive for making the damage occur at an appropriate region due to the good deformability of central sheet with higher temperature. The theoretical FLCs of TA15 titanium alloy sheet were predicted by introducing Hill48 yield criterion and temperature path into M-K model. The results proved that the monotonic decreasing temperature path had no effect on sheet formability, and the Nakazima test results depended on the final temperature of region at where the fracture or necking occurred. The comparison results also indicated that the test data agreed well with the theoretical FLC at 810°C.
合写作者：XinJun Li,Min Wan,ZhengYang Cai
第一作者：BoLin Ma
论文类型：期刊论文
通讯作者：XiangDong Wu
学科门类：工学
文献类型：J
卷号：94
页面范围：9-16
ISSN号：0264-1275
是否译文：否
发表时间：2016-01-09
收录刊物：SCI