摘要
采用Ag-Cu-Ti钎料进行Ti6Al4V(TC4)钛合金和1Cr18Ni9Ti不锈钢的真空钎焊,观察分析了其在钎焊温度为790～870℃和保温时间为1和3min时钎缝界面微观组织和成分分布。研究结果表明,钎缝宽度随着钎焊温度的升高而降低,随着保温时间的增加而增加;扩散层厚度随着保温时间的增加而增加。Ti是焊缝中反应物多少的决定因素。在钎焊温度790℃,保温3min时能得到较好的焊缝组织,界面无裂纹出现。
Ti6Al4V titanium alloy and 1Cr18Ni9Ti stainless steel was vacuum brazed using Ag-Cu-Ti as filler.The interfacial microstructure and element distribution was studied at 790℃～870 ℃ for 1min and 3min,respectively.The results show that the width of seam decreases with the increase of brazing temperature and increases with the increase of holding time,however,the width of the diffusion layer increases with the increase of brazing temperature.Element Ti determines the formation of inermetallic compounds.The optimal interfacial microstructure can be obtained when brazing at 790 ℃ for 3 min,no cracks are found in the brazed joint.
出处
《热加工工艺》
CSCD
北大核心
2011年第19期162-164,共3页
Hot Working Technology
