Effect of Fe-rich intermetallics on the wear behavior of eutectic Al-Si piston alloy (LM13)

被引：55

作者：

Abouei, V. ^{[1
]}

Saghafian, H. ^{[1
]}

Shabestari, S. G. ^{[1
]}

Zarghami, M. ^{[2
]}

机构：

[1] Iran Univ Sci & Technol, Sch Met & Mat Engn, Ctr Excellence Adv Mat Proc, Tehran 1684613114, Iran

[2] Supplying Automot Parts Co, Tehran, Iran

来源：

MATERIALS & DESIGN | 2010年 / 31卷 / 07期

关键词：

ALUMINUM-ALLOY; IRON; SOLIDIFICATION; PARAMETERS; PHASES; CAST;

D O I：

10.1016/j.matdes.2010.02.015

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the present study, the effect of Fe-rich intermetallics has been investigated on the wear behavior of eutectic Al-Si alloy (LM13). Dry sliding wear tests have been conducted using a pin-on-disk machine under different normal loads of 18, 51, 74 and 100 N at a constant sliding speed of 0.3 m/s. Addition of 1.2% Fe to the LM13 alloy leads to the formation of the flake like 8-intermetallic compounds. These hard compounds initiate micro cracks and can reduce the wear resistance of the alloy. The addition of Mn converts the flake like beta-intermetallic compounds to the star-like alpha-intermetallics and decreases the detrimental effect of iron. Applying high cooling rate during solidification of the alloy containing Fe and Mn, resulted to the formation of finer alpha-intermetallic compounds and improved the wear behavior of the alloy to a great extent. (c) 2010 Elsevier Ltd. All rights reserved.

引用

页码：3518 / 3524

页数：7

共 29 条

[1] An investigation of the wear behaviour of 0.2%C dual phase steels [J].