Investigation of stationary shoulder friction stir welding of aluminum alloy 7075-T651

被引：84
作者：
Li, Dongxiao [1 ]
Yang, Xinqi [1 ]
Cui, Lei [1 ]
He, Fangzhou [1 ]
Zhang, Xu [1 ]
机构：
[1] Tianjin Univ, Sch Mat Sci & Engn, Tianjin Key Lab Adv Joining Technol, Tianjin 300072, Peoples R China
来源：
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2015年 / 222卷
关键词：
Stationary shoulder friction stir welding; Aluminum; Constituent particle; Precipitate; Crack initiation energy; Tensile strength; MECHANICAL-PROPERTIES; WELDED-JOINTS; FRACTURE MODE; MICROSTRUCTURE; TOUGHNESS; STRENGTH; 6005A-T6; PARAMETERS;
D O I：
10.1016/j.jmatprotec.2015.03.036
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Stationary shoulder friction stir welding (SSFSW) was successfully performed on 7075-T651 aluminum alloy. Defect-free joints with smooth weld surface were obtained. The redistribution of constituent particles and the dissolution eta' precipitates resulted in the low crack initiation energy of the nugget zone. The low crack initiation energy in the heat affected zone (HAZ) can be attributed to both the presence of eta precipitates and the redistribution of constituent particles. The presence of eta precipitates in the HAZ was the major reason for the decreased tensile strength of SSFSW joint. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：391 / 398
页数：8
相关论文
共 20 条
[1]   Through-thickness crystallographic texture of stationary shoulder friction stir welded aluminium [J].
Ahmed, M. M. Z. ;
Wynne, B. P. ;
Rainforth, W. M. ;
Threadgill, P. L. .
SCRIPTA MATERIALIA, 2011, 64 (01) :45-48
[2]   Development of Microstructure and Crystallographic Texture during Stationary Shoulder Friction Stir Welding of Ti-6Al-4V [J].
Davies, P. S. ;
Wynne, B. P. ;
Rainforth, W. M. ;
Thomas, M. J. ;
Threadgill, P. L. .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2011, 42A (08) :2278-2289
[3]   Characterisation and modelling of toughness in 6013-T6 aerospace aluminium alloy friction stir welds [J].
Derry, C. G. ;
Robson, J. D. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 490 (1-2) :328-334
[4]   A model for predicting fracture mode and toughness in 7000 series aluminium alloys [J].
Dumont, D ;
Deschamps, A ;
Brechet, Y .
ACTA MATERIALIA, 2004, 52 (09) :2529-2540
[5]   On the relationship between microstructure, strength and toughness in AA7050 aluminum alloy [J].
Dumont, D ;
Deschamps, A ;
Brechet, Y .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 356 (1-2) :326-336
[6]   The study on microstructural and mechanical properties of weld heat affected zone of 7075-T651 aluminum alloy [J].
Hwang, RY ;
Chou, CP .
SCRIPTA MATERIALIA, 1997, 38 (02) :215-221
[7]   Formation and mechanical properties of stationary shoulder friction stir welded 6005A-T6 aluminum alloy [J].
Ji, S. D. ;
Meng, X. C. ;
Liu, J. G. ;
Zhang, L. G. ;
Gao, S. S. .
MATERIALS & DESIGN, 2014, 62 :113-117
[8]   Effect of welding parameters on microstructure and mechanical properties of AA6061-T6 butt welded joints by stationary shoulder friction stir welding [J].
Li, Dongxiao ;
Yang, Xinqi ;
Cui, Lei ;
He, Fangzhou ;
Shen, Hao .
MATERIALS & DESIGN, 2014, 64 :251-260
[9]   THE INFLUENCE OF MICROSTRUCTURE AND STRENGTH ON THE FRACTURE MODE AND TOUGHNESS OF 7XXX SERIES ALUMINUM-ALLOYS [J].
LUDTKA, GM ;
LAUGHLIN, DE .
METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1982, 13 (03) :411-425
[10]   Friction stir welding and processing [J].
Mishra, RS ;
Ma, ZY .
MATERIALS SCIENCE & ENGINEERING R-REPORTS, 2005, 50 (1-2) :1-78
12