Effect of post-weld heat treatment on tensile strength and microstructure characteristics in dissimilar friction welded (AA6061-AA7075-T6) joints

被引：10
作者：
Bakkiyaraj, M. [1 ]
Palanisamy, P. [2 ]
Nagarajan, P. K. [1 ]
Balasubramanian, V [3 ]
机构：
[1] Rajalakshmi Inst Technol, Mech Engn, Chennai 60024, Tamil Nadu, India
[2] Saveetha Engn Coll, Mech Engn, Chennai 602105, Tamil Nadu, India
[3] Annamalai Univ, Ctr Mat Joining & Res CEMAJOR, Mfg Engn, Chidambaram 608002, India
来源：
MATERIALS RESEARCH EXPRESS | 2019年 / 6卷 / 12期
关键词：
PWHT; aluminium alloy; friction welding; microstructure; MECHANICAL-PROPERTIES; ALUMINUM-ALLOY; AGING TREATMENT; PURE ALUMINUM; BEHAVIOR; AA;
D O I：
10.1088/2053-1591/ab637b
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Dissimilar AA6061 to AA7075-T6 joints fabricated by friction welding has been investigated to enhance the mechanical properties by post-weld heat treatment (PWHT) process. After fabrication, the welded samples are heat-treated by three different conditions namely, solution treatment, artificial aging and solution treatment followed by aging. Following this, the tensile properties and micro hardness of PWHT specimens were systematically investigated. Further, the influence of PWHT in fully deformed zone, partially deformed zone, heat affected zone, and parent metals were examined through the optical microscopy, scanning electron microscopy, transmission electron microscopy and energy dispersive spectrum. Finally, the results of PWHT specimens were discussed and compared with as-welded conditions.
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页数：12
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