期刊
ACTA MATERIALIA
卷 55, 期 18, 页码 6284-6291出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.actamat.2007.07.032
关键词
titanium alloys; transmission electron microscopy (TEM); dislocation dynamics; in situ; tension test
By in situ TEM deformation experiments, we studied in detail the deformation micromechanisms of a Ti-6Al-4V alloy at room temperature. All dislocations have an a-type Burgers vector and glide essentially in prismatic or basal planes. They are first emitted from alpha/beta interfaces and take a preferential orientation along their screw direction. The motion of screw dislocations controls the strain rate. Our experiments allow the microscopic parameters of plasticity for this alloy to be determined for the first time. The results concerning the screw dislocation motion, its core structure and the influence of interfaces are then discussed in comparison with previously published results. (c) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据