The mechanical properties of AA6082/AA1050 dissimilar joints subjected to multi-pass friction stir processing

被引：0
作者：
Muribwathoho, Oritonda [1 ]
Msomi, Velaphi [1 ]
Mabuwa, Sipokazi [1 ]
Merdji, Ali [2 ]
机构：
[1] Cape Peninsula Univ Technol, Fac Engn & Built Environm, Mech Engn Dept, POB 1906, ZA-7535 Bellville, South Africa
[2] Muscara Univ, Fac Engn & Technol, Mascara, Algeria
来源：
ENGINEERING RESEARCH EXPRESS | 2021年 / 3卷 / 03期
基金：
新加坡国家研究基金会;
关键词：
microstructure; microhardness; multi-pass friction stir processing; friction stir welding; tensile strength; ALUMINUM-ALLOY; MICROSTRUCTURE EVOLUTION; CORROSION BEHAVIOR; SURFACE COMPOSITE; PARAMETERS; HARDNESS; SPEED;
D O I：
10.1088/2631-8695/ac1728
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper reports 'on the influence of multi-pass friction stir processing (MFSP) on AA6082/AA1050 dissimilar joints produced by friction stir welding (FSW) technique. The produced dissimilar joints were subjected to 1pass (1P), 2pass (2P), 3pass (3P), and 4pass (4P) friction stir processing (FSP) procedure. The microstructural analysis showed the decrease in grain size with an increase in number of FSP passes. However, the tensile properties showed inverse relations with the number of FSP passes and this was linked to the dissolution of strengthening precipitates. The fractographic analysis showed the presence of dimples on all the fractured surfaces and that is an indication ductile fracture. However, the fractured surface of the 4P specimen was characterized by the presence of dimples mixed with flat structures which indicates ductility mixed with brittleness. There was no major influence of the number' of FSP passes on the microhardness of the AA6082/AA1050 joint.
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页数：12
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