等径转角挤压Cu-Cr-Zr合金的差热分析

来源期刊:中国有色金属学报(英文版)2015年第3期

论文作者:K. ABIB F. HADJ LARBI L. RABAHI B. ALILI D. BRADAI

文章页码:838 - 843

关键词:等径转角挤压;Cu-Cr-Zr合金,差热分析;电导率;储能

Key words:equal channel angular pressing (ECAP); Cu-Cr-Zr alloy; differential scanning calorimetry (DSC); electrical conductivity; stored energy

摘    要:对Cu-1Cr-0.1Zr合金在室温下进行16道次等径转角挤压(ECAP),挤压路径为Bc。利用差热分析研究合金中沉淀相的析出序列,计算每道次ECAP后合金储能、再结晶温度以及激活能。此外,对位错密度与电学性能之间的关系进行研究。结果表明:随着ECAP挤压道次的增加,合金中的储能增加,而再结晶温度则大幅度降低。

Abstract: Samples of a commercial Cu-1Cr-0.1Zr (mass fraction, %) alloy were subjected to equal channel angular pressing (ECAP) up to 16 passes at room temperature following route Bc. Differential scanning calorimetry (DSC) was used to highlight the precipitation sequence and to calculate the stored energy, recrystallization temperature and activation energy after each ECAP pass. On another hand, electrical properties were correlated with the dislocation density. Results show that the stored energy increases upon increasing ECAP pass numbers, while the recrystallization temperature decreases significantly.

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