摘要
使用Ag-Cu-Ti钎料以及Ag-Cu-Ti+BAg72Cu复合钎料对Al2O3弥散强化铜与T2铜进行真空钎焊,研究了钎焊温度和保温时间对钎焊接头组织和性能的影响。结果表明,温度过低,钎料与母材相互冶金作用较弱,接头性能较差;温度过高或保温时间过长,钎料向弥散强化铜中毛细渗入严重,焊缝中出现孔洞,接头强度也下降。利用Ag-Cu-Ti+BAg72Cu复合钎料进行钎焊能有效提高接头强度。
The vacuum brazing of Al2O3 dispersion-strengthen copper to copper T2 with the filler Ag-Cu-Ti and BAg72Cu was studied.The influence of brazing temperature and holding time on the microstructure and tensile strength was studied.The results show that when the temperature is lower,metallurgical action is not good and the bond is not firm.When the temperature is higher or the holding time is longer,the filler can infiltrate into Al2O3 dispersion-strengthen copper,cause the appearance of holes in brazed joint,which can decrease the tensile strength.Brazing with Ag-Cu-Ti and BAg72Cu composite filler,the strength of the welded joint increases.
出处
《热加工工艺》
CSCD
北大核心
2012年第9期187-190,共4页
Hot Working Technology
关键词
Al2O3弥散强化铜
T2铜
真空钎焊
抗拉强度
显微组织
Al2O3 dispersion-strengthen copper
copper T2
vacuum brazing
tensile strength
microstructure
