摘要
利用力学性能、电学性能测量、金相、电镜观察及电子衍射分析研究了时效及冷变形对Cu-5.2Ni-1.2Si合金硬度和电导率的影响规律。结果表明:时效前的冷变形可以加速时效析出过程,在时效初期尤为明显;Cu-5.2Ni-1.2Si合金冷轧80%在450℃时效15min,其硬度可以达到3.02GPa,其相对电导率达到53.8%IACS;合金的强化机制为Orowan位错绕过机制;合金的导电率与析出相的体积分数之间存在线性关系。
Effect of aging and cold deforming on microstructure and performance of Cu-5.2Ni-1.2Si alloy was studied by the mechanics performance test, the electricity performance test, metallographic test, SEM, TEM and energy spectrum analysis. The result indicated that, the cold deforming before aging may accelerate the process of aging precipitation, especially in initial period of aging; the hardness of Cu-5.2Ni-1.2Si alloy, aging for 15 rain in 450 ℃ after cold rolling 80%, may achieve to 3.02 GPa, and its relative conductivity achieves to 53.8%IACS; the alloy strengthened mechanism is the Orowan dislocation bypassed mechanism; it has the linear relations between the alloy relative conductivity and the volume score of precipitation.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2009年第A01期485-489,共5页
Rare Metal Materials and Engineering
基金
教育部博士点基金(20040533069)
湖南省自然科学基金(05JJ30095)
