Cu-10Ni-4.5Sn合金的铸态组织、性能及退火工艺  

As-cast Microstructure and Properties of Cu-10Ni-4.5Sn Alloy and Its Annealing Process

作　　者：蔡薇[1] 彭丽军[1] 谢从友[1] 任欣[2] 黄志刚[1] 陈绍广[1] 

机构地区：[1]江西理工大学材料与化学工程学院 [2]北京科技大学材料科学与工程学院

出　　处：《特种铸造及有色合金》2010年第7期599-601,共3页Special Casting & Nonferrous Alloys

基　　金：江西省自然科学基金资助项目(2009GZC0048)

摘　　要：以Cu-10Ni-4.5Sn为研究对象,探讨合金的铸态组织、性能,以及均匀化处理及软化退火条件等对后续固溶时效处理强化效果的影响。试验研究表明,铸锭在冷轧开坯前,采用750℃×12h均匀化处理(均匀化处理后铸态合金的抗拉强度和电导率分别为241.3MPa和5.8MS/m),经过总加工率为60%的冷轧后,在700℃×6h条件下软化退火,再经总加工率为85%的冷轧,在800℃×1h固溶处理及400℃×6h下进行时效处理后,其带材的电导率及硬度(HV)可达8.8MS/m和378.6,合金抗拉强度及伸长率分别为1275.9MPa和3.0%。Effects of homogenization treatment and softening annealing on solid solution strengthening and as-cast microstructure and mechanical properties of Cu-10Ni-4.5Sn alloy were investigated.Tensile strength and electric conductivity of the alloy after homogenization treatment at 750℃ for 12h reach up to 241.3MPa and 5.8MS/m,respectively.Meanwhile,the electric conductivity,hardness,tensile strength and elongation of the strip in which the ingot is homogenized at 750℃ for 12 hours before cold rolling can reach up to 8.8MS/m,378.6,1275.9MPa and 3.0%,respectively,with softening annealing at 700℃ for 6 hours after 60% total deformation rate,and then with solid solution at 800℃ for 1 hours and 400℃ for 6 hours after 85% total deformation.

关 键 词：CU-NI-SN合金 铸锭 板 组织性能 热处理 

分 类 号：TG146.11[一般工业技术—材料科学与工程] TG146.2[金属学及工艺—金属材料]