Interfacial microstructure and strength of steel/aluminum alloy lap joint fabricated by magnetic pressure seam welding

被引：127
作者：
Lee, Kwang-Jin
Kumai, Shinji
Arai, Takashi
Aizawa, Tomokatsu
机构：
[1] Tokyo Inst Technol, Dept Mat Sci & Engn, Tokyo, Japan
[2] Tokyo Inst Technol, Dept Mat Sci & Engn, Midori Ku, Tokyo 22685, Japan
[3] Tokyo Metropolitan Coll Technol, Dept Elect & Informat Engn, Tokyo, Japan
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2007年 / 471卷 / 1-2期
关键词：
low carbon steel; aluminum alloy; magnetic pressure seam welding; lap joint; intermediate layer; intermetallic particles; refined grain structure;
D O I：
10.1016/j.msea.2007.04.033
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Lap joining of low carbon steel (SPCC)/A6111 aluminum alloy was carried out using the magnetic pressure seam welding method. Interfacial microstructure, in particular, an intermediate layer formed at the weld interface was precisely examined using TEM. Tensile tests were also performed for the lap joints. Lap joining was successfully attained in several microseconds with no temperature increase. Weld interface of the lap joint showed wavy morphology and the intermediate layer was observed along the wavy interface. These microstructures are similar to that of the explosive weld lap joint. TEM observation revealed that the intermediate layers consist of fine aluminum grains (around 100 nm) and more finely dispersed intermetallic particles. A6111 matrix close to the weld interface also exhibited extremely refined grain structure. The bonding strength of the joint was quite high and it failed at the parent plate. The multi-phase intermediate layer and grain-refined aluminum layer are considered to be the origin of high interfacial bonding strength of the lap joint. (C) 2007 Elsevier B.V. All rights reserved.
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页码：95 / 101
页数：7
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