摘要
研究了工业生产中两次形变时效对Cu-2．0％Fe-0．05％P合金组织和性能的影响，结果表明：经两次形变时效（500℃和480℃）后形成了铜基体上分布着大小不同第二相颗粒配合的组织，显著提高了合金的综合性能，其最终性σb=512MPa，δ10=5％，硬度为147HV，导电率为68．65％IACS，软化温度440℃。在轧制中合金出现开裂的原因与存在较大的铁颗粒及第二相的分布不均匀有关。
The effects of two step aging on the microstructures and properties of Cu-2.0 %Fe-0.05 %P alloy were investigated in industry production, the results indicated： as forming the microstructures of accordant realation of big particles and small particles after two step aging, the integrated properties of Cu-2.0 %Fe-0.05 %P alloy remarkably enhanced, the final properties of production were： σb=512 MPa, δ10=5 %, 147 HV, 68.65 %IACS, and 440℃ softening temperature. The cracking in cold rolling was mainly caused by the large Fe particle and heterogeneous distribution of second phase.
出处
《金属热处理》
EI
CAS
CSCD
北大核心
2005年第C00期182-184,共3页
Heat Treatment of Metals
基金
国家自然科学基金资助项目（50071026）
关键词
引线框架
铜合金
形变时效
两次时效
软化温度
lead frame
copper-based alloy
deformation aging
two step aging
softening temperature
