Microstructure and mechanical properties of aluminium/steel dissimilar weldments: effect of heat input

被引：29
|
作者：
Madhavan, S. [1 ,2 ]
Kamaraj, M. [2 ]
Vijayaraghavan, L. [1 ]
Rao, K. Srinivasa [3 ]
机构：
[1] Indian Inst Technol, Dept Mech Engn, Madras 600036, Tamil Nadu, India
[2] Indian Inst Technol, Dept Met & Mat Engn, Madras 600036, Tamil Nadu, India
[3] Andhra Univ, Dept Met Engn, Visakhapatnam 530003, Andhra Pradesh, India
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 2017年 / 33卷 / 02期
关键词：
Aluminium-steel; Welding; Microstructure; Mechanical property; Residual stress; Corrosion; GENERATION ALUMINUM-ALLOYS; STAINLESS-STEEL; RESIDUAL-STRESSES; PART; BEHAVIOR; SPECIMENS; CORROSION; RELIEF; JOINTS;
D O I：
10.1080/02670836.2016.1176716
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Lap joints of aluminium alloy A6061-T6 and galvanised steel DP800 were produced by an advanced gas metal arc welding process with AlSi3Mn filler. Four heat inputs designated as A (110 J mm(-1)), B (120 J mm(-1)), C (130 J mm(-1)) and D (140 J mm(-1)) were used during the process and the joints made were subjected to analysis of the microstructures, mechanical properties, residual stresses and corrosion behaviour. Microstructural analysis shows the formation and variation of Fe-Al intermetallic (IM) layer. It is also found that the joints made using the heat input of 120 J mm(-1) exhibited highest tensile strength and better corrosion resistance. Electron microscopy and X-ray diffraction analysis revealed the presence of different IM phases with other strengthening precipitates.
引用
收藏
页码：200 / 209
页数：10
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