微量元素Al和Mn对银带材性能的影响  

Influence of Trace Amounts of Manganese and Aluminium on the Mechanical Properties of Silver Strip

作　　者：杨富陶[1] 周世平[1] 王耀东[1] 王健[1] 李季[1] 唐敏[1] 俞建树[1] 王彦[1] 

机构地区：[1]昆明贵金属研究所,云南昆明650221

出　　处：《稀有金属材料与工程》2004年第7期781-784,共4页Rare Metal Materials and Engineering

基　　金：云南省科技基金资助项目(2000E0084M)

摘　　要：为解决银材自然时效软化的问题,在99.999%Ag中添加0.004%Al和0.003%Mn(按质量)制成纯度为99.99%的Ag材,实验表明,采用变形率为90.90%所制备的银材,在25℃温度下,自然时效365d,其强度b=370MPa,硬度HV=1030MPa保持稳定不变,有效地抑制了纯银材自然时效80d,其力学性能便大幅度下降的问题。In order to solve the softening problem of silver during natural aging pure silver (99.99%) was doped with 0.004% Al and 0.003% Mn. The test results show that during natural aging for 365 days at 25degreesC the mechanical properties remain constant at sigma(b)=370 MPa, HV=1 030 MPa, according as the deforming rate epsilon is 90.90%. This is in contrast to the behavior of pure silver whose mechanical properties drop during again for 80 days.

关 键 词：自然时效 细晶粒 高纯银 

分 类 号：TG115[金属学及工艺—物理冶金]