摘要
运用正交设计研究形变时效工艺(冷变形量、时效温度和时效时间)对低铍含量Cu-Ni-Be合金力学性能和电导率的影响,并通过光学显微镜、扫描电镜和透射电镜对其显微组织进行分析。研究结果表明:在形变时效处理的3个主要工艺参数中,时效时间对抗拉强度、屈服强度和相对电导率的影响最大,时效温度次之,冷变形量最小;合金在经过37.5%冷变形的轧制后,在470℃时效2h,γ″析出物细小且弥散分布在基体中,合金具有较好的综合性能。
The effects of deformation aging process including the quantity of cooling deformation, the aging temperature and the aging time on the mechanical and electricity conductivity of Cu-Ni-Be alloy were studied. The microscopic structure of the alloy was observed by the optical microscope, the scanning electron microscopy and the transmission electronic microscopy. The results show that among the three parameters, the aging time has the heaviest impact on the tensile strength, the yield strength and the electricity conductivity, the next is the aging temperature, and the quantity of cooling deformation comes last. In detail, at 470℃, 37.5 % of cold deformation aging for 2 h can get a type of alloy with best comprehensive quantity, in which abundant of exiguous and disperse γ″ phase occurs.
出处
《中南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2010年第2期508-513,共6页
Journal of Central South University:Science and Technology
基金
国防科工委项目(JPPT-115-184)
关键词
Cu-Ni—Be合金
形变时效
力学性能
电导率
Cu-Ni-Be alloy
deformation aging
mechanical property
electricity conductivity
