不锈钢为核工程常用结构材料,为改善其焊缝抗腐蚀性能,利用激光束对不锈钢焊缝进行快速熔凝处理的工艺试验和焊缝组织与性能的检验。实验结果表明:经激光处理后,焊缝及其热影响区表面的晶粒组织明显细化;成分偏析减少;焊缝区的塑性和抗腐蚀性质增加;热影响区的晶间腐蚀倾向得到改善。 Stainless steel is a common structural material for nuclear engineering. In order to improve the corrosion resistance of the weld, the laser welding process of the stainless steel weld rapidly fused and the microstructure and properties of the weld were tested. The experimental results show that the grain structure of the weld and its heat-affected zone is obviously refined, the segregation of components is reduced, the plasticity and corrosion resistance of the weld zone are increased, and the intergranular corrosion tendency in the HAZ is improved .