Residual stresses, microstructure and tensile properties in Ti-6Al-4V friction stir welds

被引：30

作者：

Steuwer, A. ^{[1
,3
]}

Hattingh, D. G. ^{[3
]}

James, M. N. ^{[2
,3
]}

Singh, U. ^{[4
]}

Buslaps, T. ^{[5
]}

机构：

[1] ESS AB, S-22100 Lund, Sweden

[2] Univ Plymouth, Plymouth PL4 8AA, Devon, England

[3] Nelson Mandela Metropolitan Univ, ZA-6031 Port Elizabeth, South Africa

[4] Oxford Instruments Plc, High Wycombe HP12 3SE, Bucks, England

[5] European Synchrotron Radiat Facil, F-38042 Grenoble, France

来源：

SCIENCE AND TECHNOLOGY OF WELDING AND JOINING | 2012年 / 17卷 / 07期

基金：

新加坡国家研究基金会;

关键词：

Residual stress; Ti-6Al-4V; Titanium; Friction stir weld; Microstructure; Synchrotron X-ray diffraction; FATIGUE-CRACK GROWTH; MECHANICAL-PROPERTIES; ZONE MICROSTRUCTURE; PROCESS PARAMETERS; AA5083-AA6082; DIFFRACTION; STRAIN; ALLOY;

D O I：

10.1179/136217112X13439160184196

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper reports the results of a systematic investigation of residual stresses as a function of welding speed in a set of Ti-6Al-4V friction stir welds. The investigation focuses on residual stress but links these data with microstructural information derived from micrographs and hardness measurements as well as mechanical testing results. Residual stresses were determined using energy dispersive synchrotron X-ray diffraction, which allows phase specific stresses to be distinguished. The data presented in this paper demonstrate that welds with high tensile properties can be obtained, which also have relatively low peak tensile residual stress values of similar to 30% of the tensile strength. The data also show a clear correlation between heat input and the width of the residual stress profile.

引用

页码：525 / 533

页数：9

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