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首页> 外文期刊>Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing >Study on microstructure and properties of aged Cu-Cr-Zr-Mg-RE alloy
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Study on microstructure and properties of aged Cu-Cr-Zr-Mg-RE alloy

机译：时效Cu-Cr-Zr-Mg-RE合金的组织与性能研究

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摘要

Electrical conductivity, tensile strength and micro-hardness of Cu-0.43 wt.% Cr-0.17 wt.% Zr-0.05 wt.% Mg-0.1 wt.% RE alloy were investigated after cold working and aging treatment. The results show that good combination of the physical and mechanical properties can be obtained after aging at 450 ℃ for 4h. The analysis of the microstructure by high resolution transmission electron microscopy (HRTEM) show that three kinds of strengthening phases, such as chromium-rich phase, zirconium-rich phase and the CrCu_2(Zr, Mg) particles were observed. Most of the chromium-rich phase and zirconium-rich phase dispersed separately, and few of them congregated together in the matrix. The CrCu_2(Zr, Mg) phase may be decomposed into chromium-rich phase and zirconium-rich phase at aging temperature above 450 ℃.
机译：经过冷加工和时效处理后，研究了Cu-0.43 wt。％Cr-0.17 wt。％Zr-0.05 wt。％Mg-0.1 wt。％RE合金的电导率，拉伸强度和显微硬度。结果表明，在450℃下老化4h，可以获得良好的物理机械性能组合。高分辨率透射电镜（HRTEM）分析表明，观察到了三种强化相，即富铬相，富锆相和CrCu_2（Zr，Mg）颗粒。大多数富铬相和富锆相分别分散，并且很少几个聚集在基体中。 CrCu_2（Zr，Mg）相在450℃以上的时效温度下可能分解为富铬相和富锆相。

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