Molecular dynamics simulation of the effect of surface roughness and pore on linear friction welding between Ni and Al

被引：37

作者：

Jiao, Zhen ^{[1
]}

Song, Changbao ^{[1
]}

Lin, Tiesong ^{[2
]}

He, Peng ^{[1
]}

机构：

[1] Harbin Inst Technol, State Key Lab Adv Welding Prod Technol, Harbin 150001, Peoples R China

[2] Harbin Inst Technol, Dept Elect Packaging Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China

来源：

COMPUTATIONAL MATERIALS SCIENCE | 2011年 / 50卷 / 12期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Molecular dynamics; Linear friction welding; Surface roughness; Pore closure; PLASTIC-DEFORMATION; CLOSURE; ALLOY;

D O I：

10.1016/j.commatsci.2011.06.033

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Atomic model of Ni-Al linear friction welding is established by molecular dynamics simulation. The effect of surface roughness on linear friction welding and the rules of pore closure are investigated. The simulations results show that rough surfaces are gradually flattened during the friction process. The rough SW face of the harder material (Ni) may influence the final structure of the weld. Pores near the interface is closed after linear friction welding. Pore closure in Al slab occurs in friction process by atom diffusion, while it takes place in Ni slab in forging stage mainly by deformation of the interface. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：3385 / 3389

页数：5

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