The strength of friction stir welded and friction stir processed aluminium alloys

被引：143
|
作者：
Starink, M. J. [1 ]
Deschamps, A. [2 ]
Wang, S. C. [1 ]
机构：
[1] Univ Southampton, Sch Engn Sci, Mat Res Grp, Southampton SO17 1BJ, Hants, England
[2] UJF, CNRS, INP Grenoble, SIMAP, F-38402 St Martin Dheres, France
来源：
SCRIPTA MATERIALIA | 2008年 / 58卷 / 05期
关键词：
transmission electron microscopy (TEM); aluminium alloys; recrystallized microstructure; phase transformations; yield strength;
D O I：
10.1016/j.scriptamat.2007.09.061
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Local strength of friction stir (FS) welds and FS processed aluminium alloys in heat-treatable aluminium alloys is dominated by precipitation hardening. Strengthening due to stored dislocations is generally limited to 40 MPa, and grain size strengthening is generally less than 10 MPa. Local crystallographic texture can cause yield strength variation on the order of 5%. Published models for strengthening of FS welds make a range of simplifying assumption which can cause uncertainties in the predictions of up to 50 MPa. Possible improvements are explored. (c) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：377 / 382
页数：6
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