Microstructure and mechanical properties of friction stir spot welded dissimilar aluminum alloys

被引：2
|
作者：
Lewise, K. Anton Savio [1 ]
Dhas, Edwin Raja J. [2 ]
Pandiyarajan, R. [3 ]
机构：
[1] Noorul Islam Ctr Higher Educ, Dept Aeronaut Engn, Kumaracoil 629180, India
[2] Noorul Islam Ctr Higher Educ, Dept Automobile Engn, Kumaracoil, India
[3] Agni Coll Technol, Dept Mechatron, Chennai, Tamil Nadu, India
来源：
JOURNAL OF THE CHINESE INSTITUTE OF ENGINEERS | 2022年 / 45卷 / 05期
关键词：
Friction stir spot welding; microstructure; microhardness; tensile; dissimilar; WELDING PARAMETERS; BEHAVIOR; GEOMETRY; JOINTS;
D O I：
10.1080/02533839.2022.2061603
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The present study was the result of an investigation of friction stir spot (FSS)-welded similar aluminum alloys 2024-T3 joint and 7075-T6 joint and dissimilar aluminum alloy 2024-T3-7075-T6 joint. The mechanical, microstructural, and tribological behavior of the different FSS-welded specimens were characterized for effects of influence of the input process parameters. The dissimilar FSS-welded 2024-T3-7075-T6 joint exhibited uniform distribution in material flow in the welded zone. A marked improvement in microhardness was noted when it increased from 30 to 40.94 HV, while an increase in tensile strength from 128 to 166.3 MPa was observed for the FSS-welded dissimilar 2024-T3-7075-T6 joint alloy. The dissimilar alloy weld joint exhibited improved microhardness and tensile properties than their counterparts in both variants of the similar FSS-welded specimens, with a 35.6% increase in microhardness for the bottom plate in welded nugget zone and improvement of 13.14% and 5.54% in ultimate tensile strength when compared to aluminum alloy 2024-T3 joint and 7075-T6 joint under same welding parameters.
引用
收藏
页码：453 / 464
页数：12
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