摘要
研究了固溶-冷变形-时效处理对高强导电弹性Cu-Zn-Ni-Al合金力学性能、导电率和显微组织的影响。结果表明,经固溶与冷变形处理后进行时效热处理,合金的抗拉强度、屈服强度和电导率都大幅度提高。825℃×1 h固溶+80%冷轧变形+450℃×1 h时效处理是Cu-Zn-Ni-Al合金综合性能较好的热处理工艺,其抗拉强度、屈服强度和伸长率分别为1065、1017 MPa和2.0%;最佳导电率可达38.1%IACS。合金的微观组织为固溶体和弥散相颗粒(主要是γ'相),析出强化是合金强化的主要原因。
The effects of solution-cold rolling-aging process on the mechanical properties,electrical conductivity and microstructure of Cu-Zn-Ni-Al alloy with high strength electrical conductivity and elasticity were studied.The results show that the tensile strength,yield strength and electrical conductivity of the alloy increase greatly after sold solution-cold rolling-aging process.The optimum thermo-mechanical treatment process is solution at 825 ℃ for 1 h and 80% cold rolling and then aging at 450 ℃ for 1 h,the tensile strength,yield strength and elongation of the Cu-Zn-Ni-Al alloy can reach 1065 MPa,1017 MPa and 2%,respectively.Optimal electrical conductivity of Cu-Zn-Ni-Al alloy can reach 38.1%IACS.The microstructure of the alloy is solid matrix and dispersive second-phase γ＇ phase,precipitation strengthening is the prime strengthening mechanism of the studied alloy.
出处
《热加工工艺》
CSCD
北大核心
2011年第22期162-165,共4页
Hot Working Technology
基金
国家自然科学基金资助项目(50371103)
关键词
Cu-Zn-Ni-Al合金
形变热处理
力学性能
导电率
微观组织
析出强化
Cu-Zn-Ni-Al alloy
thermo-mechanical treatment
mechanical properties
electrical conductivity
microstructure
precipitation strengthening
