Flow visualization and estimation of strain and strain-rate during friction stir process

被引：31

作者：

Mukherjee, S. ^{[1
]}

Ghosh, A. K. ^{[1
]}

机构：

[1] Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2010年 / 527卷 / 20期

关键词：

Friction stir processing; Aluminum alloy; Flow visualization; Strain; Strain-rate; WELDS;

D O I：

10.1016/j.msea.2010.04.091

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A soft and ductile aluminum foil is embedded within a workpiece undergoing friction stir processing (FSP) to observe the deformation zone. A whirlpool of material is detected in the stir zone which consumes the foil over time. Among different approaches to estimate material strain, a logarithmic thickness strain is defined and experimentally measured by observing the gradual change in thickness of ductile aluminum foil. Additionally a strain-rate is numerically evaluated from the FSP process parameters and the deformed foil geometry using finite-element analysis. It is believed that this method provides reliable strain-rates in the friction stir process. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：5130 / 5135

页数：6

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