Abstract: Manufacturing industry has been pursuing “light-weighting” to reduce energy consumption. Property advantages of different materials can be well merged in a dissimilar metal welds/joints; thus dissimilar metal welding is one of the most effective approaches to achieving “light-weighting”. However, hard and brittle intermetallic compounds (IMCs) tend to form at the welding interfaces and to significantly reduce the strength and toughness of the welds. The formation of interface IMC would be prohibited or even avoided by using high entropy alloys (HEAs) as “interlayer” materials during dissimilar metal welding/joining. This possibility is a result of the synergistic cooperation of HEAs’ high entropy effect and sluggish diffusion effect. Current explorations on the application of HEAs in this area are reviewed in the present paper, focusing on the effects of HEAs on the IMC formation, microstructure and mechanical properties of the joints. Despite the great potential, more fundamental stu-dies are needed to mechanistically understand the effects of HEAs on the microstructure and mechanical properties of different weld interfaces. In addition, studies should be gradually switched from laboratory-scale materials to industry-scale materials to further promote the application.
吴正刚, 李熙, 李忠涛. 高熵合金应用于异种金属焊接的研究现状及发展趋势[J]. 材料导报, 2021, 35(17): 17031-17036.
WU Zhenggang, LI Xi, LI Zhongtao. Research Status on the Application of High-entropy Alloys in Dissimilar Metal Welding. Materials Reports, 2021, 35(17): 17031-17036.
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