Friction-stir lap-joining of aluminium-magnesium/poly-methyl-methacrylate hybrid structures: thermo-mechanical modelling and experimental feasibility study

被引：70
作者：
Derazkola, H. Aghajani [1 ]
Khodabakhshi, F. [2 ]
Simchi, A. [3 ,4 ]
机构：
[1] Islamic Azad Univ, Young Researchers & Elites Club, Sci & Res Branch, POB 14515-775,Daneshgah Blvd,Simon Bulivar Blvd, Tehran, Iran
[2] Univ Tehran, Coll Engn, Sch Met & Mat Engn, POB 11155-4563, Tehran, Iran
[3] Sharif Univ Technol, Dept Mat Sci & Engn, Tehran, Iran
[4] Sharif Univ Technol, Inst Nanosci & Nanotechnol, Tehran, Iran
来源：
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING | 2018年 / 23卷 / 01期
关键词：
Dissimilar joining; friction-stir welding; PMMA; aluminium alloy; thermo-mechanical modelling; microstructure; mechanical property; MATERIAL FLOW; NUMERICAL-SIMULATION; PROCESS PARAMETERS; WELDED-JOINT; ALLOY; MICROSTRUCTURE; COMPOSITE; POLYMERS; HEAT; TEMPERATURE;
D O I：
10.1080/13621718.2017.1323441
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this research, the feasibility of friction-stir welding (FSW) for dissimilar lap-joining of an aluminium-magnesium alloy (AA5058) and poly-methyl-methacrylate sheets to attain sound and defect-free joints was examined. The inter-mixing flow patterns between the metal and polymer counterparts during FSW were predicted by employing three-dimensional finite element models. It is shown that the bonding mechanism between the dissimilar materials is mechanical interlocking at the interface which controls the joint strength depending on the processing parameters. The most suitable dissimilar lap-joining regarding microstructural soundness is attained at w = 1600 rev min(-1) and v = 25 mm min(-1). Under this condition, the maximum joint strength, which is about similar to 60% of the weakest base material, is attained. Fractography indicates that the rupture occurs from the aluminium side.
引用
收藏
页码：35 / 49
页数：15
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