摘要
对Cu-0.36Cr-0.03Zr合金进行时效处理,研究时效温度和时间对合金性能和组织的影响,借助高分辨透射电镜观察时效析出相的组织形态,并研究不同温度下该合金的时效析出动力学。结果表明:经过时效处理后,析出相弥散分布,提高了合金的显微硬度和导电率,经500℃时效2 h后,合金硬度和导电率分别达到153.9 HV和84.54%IACS;通过微观分析确定在550℃时效2 h后合金中存在Cr和Cu4Zr两种析出相;通过对导电率与析出相体积分数关系的分析,确定合金在不同温度下时效的相变动力学Avrami经验方程和导电率方程,并绘制等温转变动力学曲线。
The effects of aging temperature and aging time on the microstructure and properties of Cu-0.36Cr-0.03Zr alloy aged at different temperatures were studied. The morphology of precipitation was observed by means of high resolution transmission electron microscope and the aging kinetics of the alloy was studied. The results show that the precipitates are dispersed and the microhardness and electrical conductivity are enhanced to 153.9 HV and 84.54%IACS, respectively, due to aging treatment at 500℃for 2 h. There are Cr and Cu 4 Zr precipitates existing in the alloy aged at 550 ℃ for 2 h through the micro-analysis. The Avrami equation of phase transformation kinetics and the electrical conductivity equation are obtained, while the transformation kinetics curve is drawn through the analysis of the relationship between electrical conductivity and volume fraction of precipitates.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2013年第7期1879-1884,共6页
The Chinese Journal of Nonferrous Metals
基金
国家自然科学基金资助项目(50571035)
河南省高校科技创新团队支持计划资助项目(2012IRTSTHN008)
河南省高等学校青年骨干教师资助计划资助项目(09003047)
河南科技大学科研创新培育基金资助项目(2010CZ0008)
