摘要
研究了不同冷轧变形量和不同退火工艺对以机械合金化法制备的Cu-4%WC复合材料的组织与性能的影响,探讨了该材料的硬度、强度以及组织在高温退火过程中出现异常现象的原因。结果表明,冷轧变形可提高原始粉末烧结材料的致密度,材料的强度和导电率随轧制变形量的增大而增大;WC弥散强化铜材料不宜通过冷轧变形来提高其软化温度;该复合材料的退火行为在500℃下以再结晶晶粒长大为主,在600℃及其以上温度以再结晶晶粒形核为主。
The influences of various cold rolling deformation ratio and annealing process on WC/Cu composite which was prepared using mechanical alloying were studied, and some abnormal changes of hardness, strength and microstructure of the materials which had appeared during high temperature annealing were also analyzed. The results show that, cold rolling deformation can enhance the density of the composite, and its strength and electric conductivity increase with the increase of rolling deformation ratio;it is not suitable to increase the softening temperature of WC/Cu composite by using cold rolling;the primary annealing behavior of the composite is the growth of recrystallization grains at 500℃, and the nucleation grains of recrystallization grains at 600 ℃or above.
出处
《金属热处理》
EI
CAS
CSCD
北大核心
2007年第6期23-26,共4页
Heat Treatment of Metals
关键词
WC弥散强化铜
冷轧
退火
组织
性能
WC/Cu composite
cold rolling
annealing
microstructure
property
