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.

这项工作旨在研究三种焊接类型的不锈钢/碳钢复合板接头的组织和力学性能：分别采用无过渡层的焊接，采用钨极惰性气体保护焊的过渡层焊接和采用屏蔽金属电弧焊。两种过渡层焊接金属均包含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接金属中形成了脆性马氏体区。通过屏蔽金属电弧焊焊接的过渡层复合板接头达到了最佳的焊接质量，而合金元素没有过度稀释或形成脆性相，