Determination of strain rate in Friction Stir Welding by three-dimensional visualization of material flow using X-ray radiography

被引：61

作者：

Morisada, Y. ^{[1
]}

Imaizumi, T. ^{[1
]}

Fujii, H. ^{[1
]}

机构：

[1] Osaka Univ, Joining & Welding Res Inst, Osaka 5670047, Japan

来源：

SCRIPTA MATERIALIA | 2015年 / 106卷

基金：

日本科学技术振兴机构;

关键词：

Friction Stir Welding; X-ray radiography; Image analysis; Strain rate; Recrystallization; GRAIN-SIZE; LIQUID CO2; ALUMINUM; ALLOY; PARAMETER; STEEL;

D O I：

10.1016/j.scriptamat.2015.05.006

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Recrystallization, which is mainly caused by the induced strain, is one of the most important factors of Friction Stir Welding. In this study, strain and strain rate are directly obtained by the change in the material flow velocity which is observed by three-dimensional visualization of the material flow. The grain size of the pure aluminum in the stir zone estimated by the Zener-Hollomon parameter using the obtained strain rate shows good agreement with that observed by Electron Back-Scatter Diffraction mapping. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：57 / 60

页数：4

共 25 条

[1] Relating grain size to the Zener-Hollomon parameter for twin-roll-cast AZ31B alloy refined by friction stir processing [J].