喷射沉积法Cu-9Ni-6Sn合金的组织与性能研究  

Study on the Stucture and Properties of Cu-9Ni-6Sn Alloy Prepared by Spray Deposition

作　　者：杨东超[1] 张永甲[1] 王飞[1] 谢明[1] 

机构地区：[1]昆明贵金属研究所,昆明650106

出　　处：《电工材料》2009年第1期13-17,共5页Electrical Engineering Materials

基　　金：云南省自然科学基金(2005E0038Q)

摘　　要：用硬度测量仪、光学显微镜、电子探针、X射线衍射仪和透射电子显微镜研究了喷射沉积Cu-9Ni-6Sn合金的相组织以及时效过程的组织变化和时效强化,并与熔铸法制备的同种合金进行对比。结果表明,喷射沉积法能优化合金组织,有效地抑制Sn的偏析;Spinodal分解和亚稳相γ′是形成合金时效强化的主要原因;冷变形能加速合金时效强化。The microstructure and age hardening of spray deposited Cu-9Ni-6Sn alloy have been investigatied by using hardness measurement, optical microsturetare, electron probe, X-ray diffraction and transmission electron microscope. The mierostructure of as sprayed Cu-gNi-6Sn alloy was compared with that of the same alloy obtained by conventional casting. The results show that spray deposited Cu-gNi-6Sn alloy exhibited the equiaxial grain and refined and homogeneous distribution of composition. Phase precipitation in alloy during age hardening treatment were also studied. It was suggested that spinodal decomposition and the formation of the γ′ were two main causes of age hardening in spray deposited Cu-gNi-6Sn alloy. Transfiguration in room temperature could accelerate age hardening.

关 键 词：喷射沉积 Cu-9Ni-6Sn合金 相组织 时效强化 SPINODAL分解 

分 类 号：TM201.4[一般工业技术—材料科学与工程]