This work aims to study the microstructure and mechanical properties of stainless steel/carbon steel clad plate joints with three welding types: welding without transition layer, welding with transition layer using tungsten inert gas arc welding and shielded metal arc welding, respectively. Both of transition layer-weld metals contain ferrite + austenite phases obtained by different solidification modes. The brittle martensite zone is formed in the stainless steel weld metal without the transition layer because of the excessive diffusion of Cr, Ni elements. The clad plate joints with transition layer welded by shielded metal arc welding achieved the best welding quality without excessive alloy element dilution or formation of brittle phase, which reveals a perfect welding joint without obvious hardness gradient and obtains outstanding mechanical properties.

中文翻译：

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不同焊接工艺不锈钢复合板焊接接头的显微组织和力学性能

本工作旨在研究不锈钢/碳钢复合板接头采用无过渡层焊接、过渡层焊接分别采用钨极惰性气体保护焊和金属保护电弧焊三种焊接方式的组织和力学性能。两种过渡层-焊缝金属都含有通过不同凝固方式获得的铁素体+奥氏体相。由于Cr、Ni元素的过度扩散，在没有过渡层的不锈钢焊缝金属中形成脆性马氏体区。采用保护金属电弧焊焊接的带过渡层的复合板接头达到了最佳的焊接质量，没有过多的合金元素稀释或脆性相的形成，