In situ synthesizing SiC particles and its strengthening effect on an Al-Si-Cu-Ni-Mg piston alloy

被引：58

作者：

Du, Xiaofan ^{[1
]}

Gao, Tong ^{[1
]}

Liu, Guiliang ^{[2
]}

Liu, Xiangfa ^{[1
]}

机构：

[1] Shandong Univ, Minist Educ, Key Lab Liquid Solid Struct Evolut & Proc Mat, 17923 Jingshi Rd, Jinan 250061, Peoples R China

[2] Shandong Al & Mg Melt Tech Co Ltd, Jinan 250061, Shandong, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2017年 / 695卷

基金：

中国国家自然科学基金;

关键词：

SiC; Casting; Al-Si composites; Elevated-temperature properties; METAL-MATRIX COMPOSITES; MECHANICAL-PROPERTIES; SILICON-CARBIDE; REACTIVE INFILTRATION; PRESSURE INFILTRATION; TIB2; PARTICLES; GROWTH; CARBON; ALUMINUM; BEHAVIOR;

D O I：

10.1016/j.jallcom.2016.10.170

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：

Utilizing the reaction between dissolved Si atoms and Al4C3, SiC particles have been in situ synthesized in Al-Si alloys, which perform multiple-scale ranging from nano- to micro-sized, exhibiting polyhedron morphology. An in situ 2% SiCp reinforced Al-17.5Si-4.5Cu-2Ni-0.65 Mg piston alloy was designed. The hardness, density, wear resistance and thermal expansion coefficient properties are improved, and the ultimate tensile strength can be increased up to 132 MPa tested at 350 degrees C. Besides, it is regarded that the in situ SiC particulates act on the process of heat treatment, which affect the mechanical properties as a result. The in situ SiCp/Al-Si composites may be promising candidates for high temperature applications. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：1 / 8

页数：8

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