The results show that using the right welding parameter and A307 welding rod of high Cr and Ni,the best microstructure and properties of U71Mn and 1Cr18Ni9Ti welding joints of the dissimilar steel can be obtained.

• 结果表明:采用小电流小规范焊接工艺和高Cr、高Ni的A307焊条施焊,U71Mn和1Cr18Ni9Ti异种钢焊接接头的组织和性能最优。