载荷对外加颗粒双金属复合材料摩擦性能的影响

李秀青; 宋延沛

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载荷对外加颗粒双金属复合材料摩擦性能的影响
Effects of Loading on the Tribological Property of Particle Reinforced Bimetal Composites
2011年31卷第1期页码：76-78
纸质出版日期： 2011 ，
DOI：

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[1]李秀青,宋延沛.载荷对外加颗粒双金属复合材料摩擦性能的影响[J].特种铸造及有色合金,2011,31(01):76-78+107.

Li Xiuqing, Song Yanpei. Effects of Loading on the Tribological Property of Particle Reinforced Bimetal Composites[J]. Special Casting & Nonferrous Alloys, 2011,31(1):76-78.
[1]李秀青,宋延沛.载荷对外加颗粒双金属复合材料摩擦性能的影响[J].特种铸造及有色合金,2011,31(01):76-78+107. DOI：

Li Xiuqing, Song Yanpei. Effects of Loading on the Tribological Property of Particle Reinforced Bimetal Composites[J]. Special Casting & Nonferrous Alloys, 2011,31(1):76-78. DOI：

摘要

采用外加高碳铬铁颗粒法和离心复合铸造法制备了高铬铸铁/球铁双金属复合材料

并借助MMS-1G高速销盘摩擦磨损试验机、光学显微镜、扫描电镜（SEM）和X射线衍射仪（XRD）研究了表面耐磨层的微观组织和在不同载荷下的摩擦性能。结果表明

表面耐磨层的微观组织为回火马氏体+Cr7C3+残余奥氏体+少量Cr23C6和Cr3C;在40m/s摩擦速度下

随着载荷的不断增加

摩擦因数呈下降趋势

磨损率几乎呈线性增加;磨损机制主要表现为磨粒磨损、氧化磨损和粘着磨损。

Abstract

A high Cr cast iron/nodular iron bimetal composites were prepared with adding high carbon ferro-chrome particles by centrifugal composite method.Microstructure of surface wear resistant layer on the composites and its tribological behavior under different loadings were investigated by MMS-1G frictional and wear tester

OM（optical microscope）

SEM（scanning electron microscope）and XRD（X-ray diffraction）.The results show that microstructure of the surface wear resistant layer is composed of tempered martensite

Cr7C3 phase

residual austentite

a little Cr23C6 and Cr3C phase.At the speed of 40m/s

with increasing in loading

frictional coefficient is decreased with approximately linear increase of weight loss.The wear mechanism is characterized by abrasive wear

oxidative wear and adhesive wear.