Microstructure and mechanical properties of Al-6061-T6 alloy welded by a new hybrid FSW/SSW joining process

被引：12
作者：
Hajihashemi, M. [1 ]
Shamanian, M. [1 ]
Niroumand, B. [1 ]
机构：
[1] Isfahan Univ Technol, Dept Mat Engn, Esfahan 8415683111, Iran
来源：
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING | 2016年 / 21卷 / 06期
关键词：
Al6061; alloy; Hybrid welding; Friction stir welding; Semisolid welding; Microstructure; Mechanical properties; ALUMINUM-ALLOY; WELDING PARAMETERS; MAGNESIUM ALLOY; AL; 6061-T6; STIR; JOINTS; BEHAVIOR; HARDNESS;
D O I：
10.1080/13621718.2015.1138019
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study for the first time, the effects of decrease in heat inflow to the weld metal in friction stir process by utilising semisolid processing and decreasing the pin rotational speed as well as increasing the pin transverse speed were examined. As a result, the characteristic loss of hardness and strength in the weld zone were eliminated. The results showed that by approaching the ultrafine microstructure in the weld zone through the hybrid FSW/SSW process, the hardness and elongation values reached to 90 Hv and 8.88%, respectively. These are only slightly different from those of the base metal of the welded samples. Furthermore, the ultimate tensile strength of the samples welded by the hybrid technique was found to be about 167 MPa that was higher than those of the samples welded by friction stir welding (151 MPa) and semisolid welding (114 MPa) techniques.
引用
收藏
页码：493 / 503
页数：11
相关论文
共 40 条
[1]  
Amirkhiz BS, 2006, SOLID STATE PHENOMEN, V116-117, P397
[2]  
ASM International, 1997, E8M04 ASM INT ASTM, P1, DOI [10.1520/E0008_E0008M-11, DOI 10.1520/E0008_E0008M-11.]
[3]   Low-temperature friction-stir welding of 2024 aluminum [J].
Benavides, S ;
Li, Y ;
Murr, LE ;
Brown, D ;
McClure, JC .
SCRIPTA MATERIALIA, 1999, 41 (08) :809-815
[4]   Joint properties and thermal behaviors of friction stir welded age hardenable 6061Al alloy [J].
Chang, WS ;
Bang, HS ;
Jung, SB ;
Yeon, YM ;
Kim, HJ ;
Lee, WB .
THERMEC'2003, PTS 1-5, 2003, 426-4 :2953-2958
[5]   Novel artificial neural network model for evaluating hardness of stir zone of submerge friction stir processed Al 6061-T6 plate [J].
Ebnonnasir, A. ;
Karimzadeh, F. ;
Enayati, M. H. .
MATERIALS SCIENCE AND TECHNOLOGY, 2011, 27 (06) :990-995
[6]   Bubble formation in aluminium alloy during electron beam welding [J].
Fujii, H ;
Umakoshi, H ;
Aoki, Y ;
Nogi, K .
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2004, 155 (1-3) :1252-1255
[7]  
Groza J. R., 2007, MAT PROCESSING HDB, V840, DOI [10.1201/9780849332166, DOI 10.1201/9780849332166.]
[8]  
Hajihashemi M., 2012, OPTIMIZATION UTILIZA
[9]   The Effect of Process Parameters on the Microstructure and Mechanical Properties of Semisolid Cast Al6061 [J].
Hajihashemi, Mahdi ;
Niroumand, Behzad ;
Shamanian, Morteza .
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE, 2015, 46 (02) :780-792
[10]   Microstructural and Statistical Study of Semisolid Casting of 6061 Alloy Using a Miniature Cooling Slope [J].
Hajihashemi, Mahdi ;
Niroumand, Behzad ;
Shamanian, Morteza .
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE, 2014, 45 (05) :1804-1816
1234