摘要
探讨了引线框架Cu-Cr-Zr-Mg合金固溶后二级变形时效工艺对合金硬度和电导率等性能的影响规律。结果表明,采用二级变形时效所获带材具有高的硬度、强度、电导率和软化温度,分别可达190 HV、600 MPa、47.6 s/m和560℃。二级时效过程中析出的弥散质点对回复和再结晶的阻碍作用强烈,使合金具有很高的软化温度。析出相与冷变形过程中产生的位错交互作用,使析出相不仅阻碍位错的运动而且沿密集且分布均匀的位错快速析出,促进合金强度和导电性的提高。
The effect of two-step deforming and aging processes on the properties of Cu-Cr-Zr-Mg alloy for lead frame was investigated. The results reveal that the hardness, strength, electrical conductivity and softening temperature of the alloy after two-step deforming and aging can reach 190 HV, 600 MPa, 47.6 s/m and 560 ℃, respectively. The secondphase particles precipitation along the dislocation and pinning effect of precipitates on the dislocation are responsible for the higher strength and electrical conductivity.
出处
《金属热处理》
EI
CAS
CSCD
北大核心
2006年第8期76-79,共4页
Heat Treatment of Metals
基金
河南科技大学科学研究基金资助
西北工业大学博士论文创新基金资助(CX200409).
