期刊
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
卷 424, 期 1-2, 页码 163-173出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2006.03.096
关键词
dissimilar metal welding; electron beam welding; fusion zone microstructure; stainless steels; copper
The article presents a study of three different welded joints produced by electron beam welding dissimilar materials. The junctions were obtained between copper plates and three different austenitic stainless steel plates. Different welding parameters were used according to the different thicknesses of the samples. Morphological, microstructural and mechanical (micro-hardness test) analyses of the weld bead were carried out. The results showed complex heterogeneous fusion zone microstructures characterized both by rapid cooling and poor mixing of the materials which contain main elements which are mutually insoluble. Some defects such as porosity and microfissures were also found. They are mainly due to the process and geometry parameters. (c) 2006 Elsevier B.V. All rights reserved.
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