CAJ | 학술논문

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Cu 4 Zr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。
대Cu-0.36Cr-0.03Zr합금진행시효처리，연구시효온도화시간대합금성능화조직적영향，차조고분변투사전경관찰시효석출상적조직형태，병연구불동온도하해합금적시효석출동역학。결과표명：경과시효처리후，석출상미산분포，제고료합금적현미경도화도전솔，경500℃시효2 h후，합금경도화도전솔분별체도153.9 HV화84.54%IACS；통과미관분석학정재550℃시효2 h후합금중존재Cr화Cu 4 Zr량충석출상；통과대도전솔여석출상체적분수관계적분석，학정합금재불동온도하시효적상변동역학Avrami경험방정화도전솔방정，병회제등온전변동역학곡선。
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.