Joint features and mechanical properties of friction stir lap welded alclad 2024 aluminum alloy assisted by external stationary shoulder

被引：65

作者：

Li, Zhengwei ^{[1
]}

Yue, Yumei ^{[1
]}

Ji, Shude ^{[1
]}

Chai, Peng ^{[2
]}

Zhou, Zhenlu ^{[1
]}

机构：

[1] Shenyang Aerosp Univ, Fac Aerosp Engn, Shenyang 110136, Peoples R China

[2] Beijing Univ Aeronaut & Astronaut, Sch Mech Engn & Automat, Beijing 100191, Peoples R China

来源：

MATERIALS & DESIGN | 2016年 / 90卷

基金：

中国国家自然科学基金;

关键词：

Friction stir lap welding assisted by external stationary shoulder; Surface appearance; Lap shear failure load; Fracture mode; MICROSTRUCTURES; SPEED; FLOW;

D O I：

10.1016/j.matdes.2015.10.056

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Alclad 2024-T4 aluminum alloy was successfully joined by friction stir lap welding (FSLW) assisted by external stationary shoulder in the present study. Joint surface appearances, cross-sections, microstructure and lap shear failure loads of the joints were mainly studied. The assisted external stationary shoulder is beneficial to the joint formation, by which arc corrugation, flash and void can be eliminated or diminished. Compared with the conventional FSLW joints, FSLW joints assisted by external stationary shoulder own smaller effective sheet thickness of cold lap (ESTC), bigger effective lap width (ELW) and better lap shear failure strength. Lap shear failure loads of the FSLW joints assisted by external stationary shoulder do not agree with ESTC or ELW due to different fracture modes. Fracture morphologies of the FSLW joints assisted by external stationary shoulder indicate ductile fracture. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：238 / 247

页数：10

共 29 条

[1] Toward optimum friction stir welding tool shoulder diameter [J].

Arora, A. ;

De, A. ;

DebRoy, T. .

SCRIPTA MATERIALIA, 2011, 64 (01) :9-12

[2] Microstructure and Mechanical Properties of Friction Stir Lap Welded Aluminum Alloy AA2014 [J].

Babu, S. ;

Janaki Ram, G.D. ;

Venkitakrishnan, P.V. ;

Reddy, G. Madhusudhan ;

Rao, K. Prasad .

Journal of Materials Science and Technology, 2012, 28 (05) :414-426

[3] The influences of rotational and welding speeds on microstructures and mechanical properties of friction stir welded Al5083 and commercially pure copper sheets lap joints [J].

Bisadi, H. ;

Tavakoli, A. ;

Sangsaraki, M. Tour ;

Sangsaraki, K. Tour .

MATERIALS & DESIGN, 2013, 43 :80-88

[4] Friction stir welding of lap joints: Influence of process parameters on the metallurgical and mechanical properties [J].

Buffa, G. ;

Campanile, G. ;

Fratini, L. ;

Prisco, A. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2009, 519 (1-2) :19-26

[5] Friction Skew-stir welding of lap joints in 5083-0 aluminium [J].

Cantin, GMD ;

David, SA ;

Thomas, WM ;

Lara-Curzio, E ;

Babu, SS .

SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 2005, 10 (03) :268-280

[6] Microstructures in interface region and mechanical behaviours of friction stir lap Al6060 to Ti-6Al-4V welds [J].

Chen, Z. W. ;

Yazdanian, S. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2015, 634 :37-45

[7]

Chu Q., 2015, SCI TECHNOL WELD JOI

[8] Periodical plastic flow pattern in friction stir processed Al-Mg alloy [J].

Cui, G. R. ;

Ma, Z. Y. ;

Li, S. X. .

SCRIPTA MATERIALIA, 2008, 58 (12) :1082-1085

[9] 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

[10]

Gadakh V.S., 2013, Journal of Materials Research and Technology, V2, P370, DOI DOI 10.1016/J.JMRT.2013.10.003

← 1 2 3 →