Effects of Al-Si/SiCp powder on the sinterability and wear properties of Al-Zn-Mg powder

被引：7

作者：

Lee, Eun Sun ^{[1
]}

Oak, Jeong-Jung ^{[2
,3
]}

Bang, Jeongil ^{[1
,4
]}

Park, Yong Ho ^{[1
]}

机构：

[1] Pusan Natl Univ, Dept Mat Sci & Engn, Busan 46141, South Korea

[2] Pusan Natl Univ, Global Core Res Ctr Ships & Offshore Plants, Busan 46141, South Korea

[3] DAE IL Corp, Mat Anal Lab, Ulsan 44911, South Korea

[4] Samsung Elect Co Ltd, Platform Technol Lab, Suwon 16678, South Korea

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2016年 / 689卷

基金：

新加坡国家研究基金会;

关键词：

Metal-matrix composites; Powder metallurgy; Sintering; Wear properties; DRY SLIDING WEAR; ALUMINUM COMPOSITES; ABRASIVE WEAR; BEHAVIOR; TRANSITIONS; FRICTION; POROSITY; 2-BODY; ALLOY; MILD;

D O I：

10.1016/j.jallcom.2016.07.215

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：

Al-Zn-Mg alloys are widely used in the aerospace and automotive industries because of their high strength compared to other Al-based alloys. Unfortunately, the application of Al-Zn-Mg alloys in such industries has been limited to parts that are manufactured via powder metallurgy because of their poor sinterability. In this study, an Al-Si alloy powder, which has a relatively low melting point alloy compared to Al-Zn-Mg alloys, was added into an Al-Zn-Mg powder (Alumix 431) as a binder material to enhance the sinterability of the alloy. In addition, SiC particles (SiCp) were added into the Al-Si alloy powder via gas atomization to improve the mechanical properties and wear resistance of the sintered Alumix 431 alloy. The mixed powder was sintered via hot pressing, and the wear properties of the sintered samples were analyzed with respect to two variables: vertical load and linear speed. The observed wear mechanisms included abrasion, adhesion, oxide-layer formation, and delamination. When the Alumix 431 powder was mixed with 5 wt% of the Al-Si/ SiCp alloy powder, the various aforementioned wear behaviors were delayed because of the increased densification of the sintered alloy and reinforcing effect of the SiCp. (C) 2016 Elsevier B. V. All rights reserved.

引用

页码：145 / 152

页数：8

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