Microstructure formation and electrical resistivity behavior of rapidly solidified Cu-Fe-Zr immiscible alloys

被引：13

作者：

Xiaojun Sun ^{[1
,2
]}

Jie He ^{[1
,2
]}

Bin Chen ^{[1
,2
]}

Lili Zhang ^{[1
]}

Hongxiang Jiang ^{[1
]}

Jiuzhou Zhao ^{[1
,2
]}

Hongri Hao ^{[1
]}

机构：

[1] Institute of Metal Research, Chinese Academy of Sciences

[2] School of Materials Science and Engineering, University of Science and Technology of China

来源：

JournalofMaterialsScience&Technology | 2020年 / 44卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Immiscible alloys; Liquid-liquid phase separation; Rapid solidification; Microstructure; Electrical resistivity behavior;

D O I：

暂无

中图分类号：

TG156.3 [淬火、表面淬火]; TG146.11 [];

学科分类号：

080201 ; 080502 ; 080503 ;

摘要：

The immiscible Cu-Fe alloy was characterized by a metastable miscibility gap. With the addition element Zr, the miscibility gap can be extended into the Cu-Fe-Zr ternary system. The effect of the atomic ratio of Cu to Fe and Zr content on the behavior of liquid-liquid phase separation was studied. The results show that liquid-liquid phase separation into Cu-rich and Fe-rich liquids took place in the as-quenched Cu-Fe-Zr alloy. A glassy structure with nanoscale phase separation was obtained in the as-quenched(Cu0.5Fe0.5)40Zr60alloy sample, exhibiting a homogeneous distribution of glassy Cu-rich nanoparticles in glassy Fe-rich matrix. The microstructural evolution and the competitive mechanism of phase formation in the rapidly solidified Cu-Fe-Zr system were discussed in detail. Moreover, the electrical property of the as-quenched Cu-Fe-Zr alloy samples was examined. It displays an abnormal change of electrical resistivity upon temperature in the nanoscale-phase-separation metallic glass. The crystallization behavior of such metallic glass has been discussed.

引用

页码：201 / 208

页数：8

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