Enhanced corrosion resistance of Kirkendall-effect-induced hollow Fep-reinforced Cu-matrix immiscible alloys by laser powder deposition

被引：9

作者：

Xie, Min ^{[1
]}

Zhou, Shengfeng ^{[1
]}

Jin, Jianbo ^{[1
]}

Dai, Xiaoqin ^{[1
]}

Chen, Dongchu ^{[2
]}

机构：

[1] Tianjin Polytech Univ, Laser Technol Inst, Tianjin 300387, Peoples R China

[2] Foshan Univ, Sch Mat Sci & Energy Engn, Foshan 52800, Guangdong, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2019年 / 779卷

关键词：

Kirkendall effect; Immiscible alloy; Laser powder deposition; Microstructure; PHASE-TRANSFORMATION; MICROSTRUCTURE; BEHAVIOR; SOLIDIFICATION; MECHANISMS; EVOLUTION; COPPER; VOLUME; STEEL;

D O I：

10.1016/j.jallcom.2018.11.215

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The hollow Fe-p-reinforced Cu-matrix homogeneous immiscible alloys were successfully produced by the combination of Kirkendall effect and laser powder deposition. The microstructure and corrosion resistance depended not only on chemical composition, but also on cooling rate. When Fe content decreased from 30% to 12% and cooling rate decreased from similar to 2 x 10(4) to similar to 1 x 10(4) K/s, the demixing was eliminated, the mixed Fe-p (alpha-Fe/gamma-Fe) were uniformly embedded within epsilon-Cu matrix and the "single-void" Fe-p transformed into the "multi-voids" Fe-p. The "multi-voids" immiscible alloy exhibited higher corrosion resistance than the "single-void" immiscible alloy and Brass after immersing for 5 days. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：280 / 285

页数：6

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