Molecular dynamics simulation of linear friction welding between dissimilar Ti-based alloys

被引：42
作者：
Song, Changbao [1 ]
Lin, Tiesong [1 ]
He, Peng [1 ]
Jiao, Zhen [1 ]
Tao, Jun [2 ]
Ji, Yajuan [2 ]
机构：
[1] Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Peoples R China
[2] AVIC Beijing Aeronaut Mfg Technol Res Inst, Beijing 100024, Peoples R China
来源：
COMPUTATIONAL MATERIALS SCIENCE | 2014年 / 83卷
基金：
中国国家自然科学基金;
关键词：
Molecular dynamics simulation; Linear friction welding; Diffusion; COMPUTATIONAL MATERIALS;
D O I：
10.1016/j.commatsci.2013.11.013
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Molecular dynamics simulation of linear friction welding (LFW) between Ti and Ti-Al alloy has been performed. The temperature change, plastic deformation and atomic diffusion behavior have been analyzed. Results showed that the temperature on the interface of the two rubbing slabs rose rapidly at the beginning and then fluctuated with friction time. Meanwhile, the deformed area of the rubbing slabs increased with friction time and large amount of atoms were forced out of the interface under the pressure and reciprocating motion. In addition, the perfect hexagonal close-packed structure was distorted and the long-range order of the initial structure was destroyed gradually. During the LFW process, the atomic diffusion behavior diverged with direction. Furthermore, Ti atoms showed higher diffusion ability when compared to Al atoms. (C) 2013 Elsevier B. V. All rights reserved.
引用
收藏
页码：35 / 38
页数：4
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