Thermodynamic analysis of the extension of solid solubility of the Cu-Cr system processed by mechanical alloying

被引：2

作者：

Shi, Kunyu ^{[1
]}

Shen, Tao ^{[1
]}

Xue, Lihong ^{[1
]}

Chen, Chunhao ^{[1
]}

Yan, Youwei ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China

来源：

ADVANCED MATERIALS AND PROCESSES, PTS 1-3 | 2011年 / 311-313卷

关键词：

thermodynamics; mechanical alloying; nanocrystalline; Cu-Cr;

D O I：

10.4028/www.scientific.net/AMR.311-313.392

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The nanocrystalline Cu-5wt.%Cr alloy powders were prepared by mechanical alloying. The structural changes were characterized by X-ray diffraction (XRD) technique. A thermodynamic analysis was carried out to predict the change in the solubility limit of this system. It was found that the energy resulting from the MA process is sufficient to increase the solid solubility of immiscible Cr-Cu system. The solid solubility may be extended up to 5 wt.% Cr in Cu after 20 h milling. The formation of the supersaturated solid solution leads to the decrease of Cu lattice parameter. However, it decomposes with the further increase of the milling time, which leads to the increase of Cu lattice parameter.

引用

页码：392 / 395

页数：4

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