JOURNAL OF THE JAPAN WELDING SOCIETY
Online ISSN : 1883-7204
Print ISSN : 0021-4787
ISSN-L : 0021-4787
A Few Factors that Influence Cold Welding
Study on Cold Welding (Report 1)
Osamu OhashiTatsuya Hashimoto
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1978 Volume 47 Issue 1 Pages 37-43

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Abstract

The purpose of this study is to investigate the mechanism of cold welding and influence of properties of metal, such as hardness, melting point, lattice structure and mutual solubility on weldability of similar and dissimilar metals in air. The following results were obtained.
1. Lattice structure, melting point and work hardning coefficient have influence on weldability of similar metals. At the other hand one of dissimilar metals does not depend on mutual solubility, but mainly on hardness ratio of welded pair. And softer material of welded pair being h.c.p. metal, it is difficult to weld dissimilar metals.
2. With increase of welding deformation, rupture of surface film and metal to metal contact advance and tensile shear load of the joint increases.

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