The role of friction stir welding tool on material flow and weld formation

被引：373

作者：

Kumar, K. ^{[1
]}

Kailas, Satish V. ^{[1
]}

机构：

[1] Indian Inst Sci, Dept Mech Engn, Bangalore 560012, Karnataka, India

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 485卷 / 1-2期

关键词：

friction stir welding; material flow; mechanism; defects; tool design;

D O I：

10.1016/j.msea.2007.08.013

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this investigation an attempt has been made to understand the mechanism of friction stir weld formation and the role of friction stir welding tool in it. This has been done by understanding the material flow pattern in the weld produced in a special experiment, where the interaction of the friction stir welding tool with the base material is continuously increased. The results show that there are two different modes of material flow regimes involved in the friction stir weld formation; namely "pin-driven flow" and "shoulder-driven flow". These material flow regimes merge together to form a defect-free weld. The etching contrast in these regimes gives rise to onion ring pattern in friction stir welds. In addition to that based on the material flow characteristics a mechanism of weld formation is proposed. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：367 / 374

页数：8

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