Microstructure evolution and mechanical properties of Al-Cu alloys inoculated by FeBSi metallic glass

被引：14

作者：

Bai, Zhihao ^{[1
,2
]}

Qiu, Feng ^{[1
,2
]}

Chi, Jiaxuan ^{[1
,2
]}

Zhang, Tao ^{[3
]}

Jiang, Qichuan ^{[1
,2
]}

机构：

[1] Jilin Univ, Key Lab Automobile Mat, Minist Educ, Changchun 130025, Jilin Province, Peoples R China

[2] Jilin Univ Technol, Dept Mat Sci & Engn, Changchun 130025, Jilin Province, Peoples R China

[3] Beihang Univ, Sch Mat Sci & Engn, Key Lab Aerosp Mat & Performance Minist Educ, Beijing 100191, Peoples R China

来源：

MATERIALS & DESIGN | 2015年 / 67卷

基金：

中国国家自然科学基金;

关键词：

Aluminum alloy; Metallic glass; Microstructure; Mechanical properties; AGE-HARDENING BEHAVIOR; B MASTER ALLOYS; GRAIN-REFINEMENT; ALUMINUM; SIZE; DUCTILITY; STRENGTH; PRECIPITATION; KINETICS;

D O I：

10.1016/j.matdes.2014.11.023

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A significant refining effect of alpha-Al grains from 200 mu m to 42 mu m can be achieved by addition of 0.1 wt.% FeBSi metallic glass, which is mainly attributed to the crystallization of Fe2B phase being able to act as the heterogeneous nucleation sites of alpha-Al grains during solidification. Within an inoculation time of 30 min, the inoculated Al-Cu alloys remain a fine grained structure. Moreover, the strength and ductility of the inoculated alloys are simultaneously improved. The enhanced properties of Al-Cu alloy inoculated by metallic glass are mainly due to the refined alpha-Al grains, the small theta' precipitates distributed homogeneously in grain interior and the formation of the nano-sized AlCuFeMn phase. This study provides a high-efficiency and cost-effective processing technique of refinement in this alloy, and at the same time, broadens the industry application of metallic glass. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：130 / 135

页数：6

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