A study on natural aging behavior and mechanical properties of friction stir-welded AA6061-T6 plates

被引：30

作者：

Aval, H. Jamshidi ^{[1
]}

Serajzadeh, S. ^{[2
]}

机构：

[1] Babol Univ Technol, Dept Mech Engn, Babol Sar, Iran

[2] Sharif Univ Technol, Dept Mat Sci & Engn, Tehran, Iran

来源：

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY | 2014年 / 71卷 / 5-8期

关键词：

Friction stir welding; 6061 aluminum alloy; Aging; Mechanical properties; Microstructural evolution; AL-ALLOY; TEMPER CONDITION; MODEL; PRECIPITATION; WELDABILITY; JOINTS;

D O I：

10.1007/s00170-013-5531-7

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Mechanical properties, microstructural events, residual stresses, and aging behavior of friction stir-welded AA6061-T6 were investigated in this work. Microstructural and mechanical characterizations of the friction stir-welded joints in as-welded and post-welded conditions were made by means of optical metallography, transmission electron microscopy, X-ray diffraction for determination of residual stresses, tensile testing, and hardness measurements. It was found that weld strength and hardness variations after welding are mainly dependent on the imposed heat input per unit length. Besides, the kinetics of natural aging in the welded samples was found to be noticeable within the first 14 days, and its effect decreases considerably in longer aging durations. The residual stress measurements show that subsequent natural aging leads to considerable relaxation of residual stress of about 22 MPa, while this effect is particularly significant in the stir zone and the thermomechanically affected zone.

引用

页码：933 / 941

页数：9

共 28 条

[1] Numerical and Experimental Investigations on the Loads Carried by the Tool During Friction Stir Welding [J].

Atharifar, Hosein ;

Lin, Dechao ;

Kovacevic, Radovan .

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 2009, 18 (04) :339-350

[2] Effects of Applied Load on 6061-T6 Aluminum Joined Employing a Novel Friction Bonding Process [J].

Burkes, Douglas E. ;

Hallinan, Neil P. ;

Shropshire, Karen L. ;

Wells, Peter B. .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2008, 39A (12) :2852-2861

[3] Friction stir welded structural materials: beyond Al-alloys [J].

Cam, G. .

INTERNATIONAL MATERIALS REVIEWS, 2011, 56 (01) :1-48

[4] Phase relations and precipitation in Al-Mg-Si alloys with Cu additions [J].

Chakrabarti, DJ ;

Laughlin, DE .

PROGRESS IN MATERIALS SCIENCE, 2004, 49 (3-4) :389-410

[5] Predicting tensile strength of friction stir welded AA6061 aluminium alloy joints by a mathematical model [J].

Elangovan, K. ;

Balasubramanian, V. ;

Babu, S. .

MATERIALS & DESIGN, 2009, 30 (01) :188-193

[6]

Hall E.O., 1970, YIELD POINT PHENOMEN, DOI DOI 10.1007/978-1-4684-1860-6

[7] A thermal model of friction stir welding in aluminum alloys [J].

Hamilton, C. ;

Dymek, S. ;

Sommers, A. .

INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE, 2008, 48 (10) :1120-1130

[8] Investigation into the effect of temper condition on friction stir weldability of AA6061 Al-alloy plates [J].

Ipekoglu, G. ;

Erim, S. ;

Kiral, B. Goren ;

Cam, G. .

KOVOVE MATERIALY-METALLIC MATERIALS, 2013, 51 (03) :155-163

[9] Investigation into the Influence of Post-Weld Heat Treatment on the Friction Stir Welded AA6061 Al-Alloy Plates with Different Temper Conditions [J].

Ipekoglu, Guven ;

Erim, Secil ;

Cam, Gurel .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2014, 45A (02) :864-877

[10] Effects of temper condition and post weld heat treatment on the microstructure and mechanical properties of friction stir butt-welded AA7075 Al alloy plates [J].

Ipekoglu, Guven ;

Erim, Secil ;

Cam, Gurel .

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, 2014, 70 (1-4) :201-213

← 1 2 3 →