Effect of welding process on compatibility of 1Cr16Ni4Mo2Cu2W1VN steel and Co6B alloy surfacing layer

doi:10.13251/j.issn.0254-6051.2024.07.050

Abstract

Abstract: Microstructure and properties of Co6B surfacing layer on the surface of 1Cr16Ni4Mo2Cu2W1VN steel before and after heat treatment were compared and analyzed under the two welding methods of oxyacetylene welding and argon arc welding, and the effect of welding method on the compatibility of the 1Cr16Ni4Mo2Cu2W1VN steel and Co6B alloy was explored. The results show that the 1Cr16Ni4Mo2Cu2W1VN steel has good compatibility with the Co6B alloy. Compared with the argon arc weld surfacing layer, the fusion transition zone of the oxyacetylene weld surfacing layer is wider, and the hardness is 7.3 HRC higher than that of the argon arc weld surfacing layer. After solid solution+cryogenic treatment+tempering, the oxyacetylene weld surfacing layer is dense, with fine and uniform structure, hardness of 45.3 HRC, and impact absorbed energy of 84.7 J, exhibiting better comprehensive performance.

Key words: oxyacetylene welding, argon arc welding, 1Cr16Ni4Mo2Cu2W1VN steel, Co6B alloy surfacing layer, compatibility, properties

CLC Number:

TG156

Wu Weijian, Liu Chengmiao, Li Quan. Effect of welding process on compatibility of 1Cr16Ni4Mo2Cu2W1VN steel and Co6B alloy surfacing layer[J]. Heat Treatment of Metals, 2024, 49(7): 326-330.

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