Effects of zinc coating on magnesium alloy-steel joints produced by cold metal transfer method

被引：19
作者：
Cao, R. [1 ]
Zhu, H. X. [1 ]
Wang, Q. [2 ]
Dong, C. [2 ]
Lin, Q. [1 ]
Chen, J. H. [1 ]
机构：
[1] Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China
[2] Dalian Univ Technol, Minist Educ, Key Lab Mat Modificat Laser Ion & Electron Beams, Dalian 116024, Peoples R China
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 2016年 / 32卷 / 18期
关键词：
Magnesium; Steel; Brazed welded; Zinc; Aluminium; Cold metal transfer; COATED STEEL; MECHANICAL-PROPERTIES; MG ALLOY; WELDED-JOINTS; MILD-STEEL; SPOT WELDS; Q235; STEEL; MICROSTRUCTURE; INTERLAYER; ALUMINUM;
D O I：
10.1080/02670836.2016.1148107
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Magnesium alloys are lap-joined to galvanised and bare steel sheets by a cold metal transfer method. The weld appearance, cross-section, tensile strength and fracture behaviour of these joints are characterised by scanning electron microscopy, tensile tests and energy-dispersive spectroscopy. The joints were found to have good weld appearance and satisfactory tensile strength. The spreadability and wettability of the Mg alloy-galvanised steel joint are superior to those of the Mg alloy-bare steel joint, but the tensile strength is lower. In particular, the presence of Zn on the galvanised steel sheet improves wettability but decreases tensile strength. Aluminium has a high affinity for Fe, and the thinner layer of Fe-Al improves the mechanical properties of the Mg alloy-bare steel joint.
引用
收藏
页码：1805 / 1817
页数：13
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