Effects of Magnesium on Wear Resistance of H13 Steel

被引：4

作者：

Wang, Liangliang ^{[1
]}

Li, Jing ^{[1
]}

Ning, Bo ^{[1
]}

Li, Yongyong ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, State Key Lab Adv Met, Beijing 100083, Peoples R China

来源：

MATERIALS TRANSACTIONS | 2014年 / 55卷 / 07期

基金：

中国国家自然科学基金; 高等学校博士学科点专项科研基金;

关键词：

magnesium; heat treatment; wear resistance; H13; steel; OXIDATIONAL WEAR; MAR-M247; SUPERALLOY; CARBON-STEELS; TOOL STEEL; BEHAVIOR; FRICTION; MG; TEMPERATURES; MECHANISM; ORIGINS;

D O I：

10.2320/matertrans.M2014086

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Effects of magnesium on wear resistance of H13 steel have been investigated. A disc-on-disc configuration with load of 200N was employed to study the wear behavior, hi order to understand wear mechanisms, wear tracks were studied by scanning electron microscopy. The experimental results show that after magnesium treatment finer carbides were precipitated and the hardness increased with the increasing of magnesium content, which can improve the wear resistance. The specimen without magnesium treatment has the lowest wear resistance and the mode of wear is adhesive. With increase of magnesium content, the degree of oxide patches coverage increased result in the wear rate decreased gradually. Wear mechanism has been changed from adhesive to oxidative after the magnesium content increased to 10 ppm. In this case, the friction coefficient exhibits a higher fluctuation resulted from the alternative formation and delamination of oxide layers.

引用

页码：1104 / 1108

页数：5

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