国内外焊接材料熔敷金属韧化机理的研究进展

Progress in mechanism of toughness of deposited metal of welding consumable

介绍了国内外焊接材料熔敷金属冲击韧性的研究进展:加入适量的Ni、Re、Zr、Cu和Al等合金元素;控制焊接热输入及冷却速度,可以得到更多的针状铁素体,从而提高熔敷金属的冲击韧性;夹杂物是影响熔敷金属冲击韧性的重要因素,其成分、尺寸、形态、分布等通过影响针状铁素体形核,而影响熔敷金属的冲击韧性。

The progress in impact toughness of weld metal in domestic and abroad was introduced.By adding the proper alloy elements such as Ni,Re,Al,Cu and Zr,controlling heat input and cooling rate,more acicular ferrite were obtained,and the impact toughness of weld metal can be improved.The inclusion is an important factor which affects the impact toughness of weld metal.Its properties such as component,size, shape and distribution affect the nucleation of acicular ferrite,which further affects impact toughness of weld metal.