Effect of welding parameters on microstructure and mechanical properties of friction stir welded joints of AA7039 aluminum alloy

被引：144

作者：

Sharma, Chaitanya ^{[1
]}

Dwivedi, Dheerendra Kumar ^{[1
]}

Kumar, Pradeep ^{[1
]}

机构：

[1] IIT Roorkee, Mech & Ind Engn Dept, Roorkee 247667, Uttarkhand, India

来源：

MATERIALS & DESIGN | 2012年 / 36卷

关键词：

Welding; Mechanical; Fractography; FATIGUE; DEFECT;

D O I：

10.1016/j.matdes.2011.10.054

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A high strength Al-Zn-Mg alloy AA7039 was friction stir welded by varying welding and rotary speed of the tool in order to investigate the effect of varying welding parameters on microstructure and mechanical properties. The friction stir welding (FSW) process parameters have great influence on heat input per unit length of weld, hence on temperature profile which in turn governs the microstructure and mechanical properties of welded joints. There exits an optimum combination of welding and rotary speed to produce a sound and defect free joint with microstructure that yields maximum mechanical properties. The mechanical properties increase with decreasing welding speed/increasing rotary speed i.e. with increasing heat input per unit length of welded joint. The high heat input joints fractured from heat affected zone (HAZ) adjacent to thermo-mechanically affected zone (TMAZ) on advancing side while low heat input joints fractured from weld nugget along zigzag line on advancing side. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：379 / 390

页数：12

共 32 条

[21] Visualisation of material flow in autogenous friction stir welds [J].

Reynolds, AP .

SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 2000, 5 (02) :120-124

[22] Effects of friction stir welding on microstructure of 7075 aluminum [J].

Rhodes, CG ;

Mahoney, MW ;

Bingel, WH ;

Spurling, RA ;

Bampton, CC .

SCRIPTA MATERIALIA, 1997, 36 (01) :69-75

[23] Effect of welding speed on microstructure and mechanical properties of friction-stir-welded aluminum [J].

Sakthivel, T. ;

Sengar, G. S. ;

Mukhopadhyay, J. .

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, 2009, 43 (5-6) :468-473

[24] The microstructure and mechanical properties of friction stir welded Al-Zn-Mg alloy in as welded and heat treated conditions [J].

Singh, R. K. R. ;

Sharma, Chaitanya ;

Dwivedi, D. K. ;

Mehta, N. K. ;

Kumar, P. .

MATERIALS & DESIGN, 2011, 32 (02) :682-687

[25] Heat input and temperature distribution in friction stir welding [J].

Tang, W ;

Guo, X ;

McClure, JC ;

Murr, LE .

JOURNAL OF MATERIALS PROCESSING & MANUFACTURING SCIENCE, 1998, 7 (02) :163-172

[26]

Thomas W. M., 2005, P 5 INT FOR AL SHIPS, P137

[27]

Thomas WM, 2001, ALUMINUM 2001: PROCEEDINGS OF THE TMS 2001 ANNUAL MEETING ALUMINUM AUTOMOTIVE AND JOINING SYMPOSIA, P213

[28] Friction stir welding of aluminium alloys [J].

Threadgill, P. L. ;

Leonard, A. J. ;

Shercliff, H. R. ;

Withers, P. J. .

INTERNATIONAL MATERIALS REVIEWS, 2009, 54 (02) :49-93

[29] Temperature evolution, microstructure and mechanical properties of friction stir welded thick 2219-O aluminum alloy joints [J].

Xu, Weifeng ;

Liu, Jinhe ;

Luan, Guohong ;

Dong, Chunlin .

MATERIALS & DESIGN, 2009, 30 (06) :1886-1893

[30]

Yutaka S., 2005, MAT SCI ENG A-STRUCT, VA405, P333

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