The experimental results indicate that addition of optimum content of RE may reduce the width of HAZ,restrain the excessive growth of grains and greatly low...

• 适量稀土的加入能够改善焊缝组织，使异种钢焊接接头热影响区变窄、过热区晶粒长大受到抑制、过渡区脆硬层硬度显著降低，有利于异种钢焊接接头抗裂性能的提高。