Effects of vanadium and carbon on microstructures and abrasive wear resistance of high speed steel

被引：80

作者：

Wei, SZ ^{[1
]}

Zhu, JH

Xu, LJ

机构：

[1] Xian Jiaotong Univ, Sch Mat Sci & Engn, Xian 710049, Peoples R China

[2] Henan Univ Sci & Technol, Sch Mat Sci & Engn, Luoyang 471039, Peoples R China

来源：

TRIBOLOGY INTERNATIONAL | 2006年 / 39卷 / 07期

关键词：

vanadium; carbon; high speed steel; abrasive wear resistance; hardness;

D O I：

10.1016/j.triboint.2005.04.035

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The effects of vanadium and carbon on microstructures and abrasive wear resistance of high speed steel were studied. The results show that the microstructures are characterized by VC, M7C3 and MoC in the martensite and austenite matrix. Typical morphologies of vanadium carbides are found to be spherical, lumpy, strip, and short rod. On the other hand, the vanadium carbides have three kinds of distributions, i.e. grain boundary, chrysanthemum-like, and homogeneous distributions. The abrasive wear resistance of high speed steel depends on the hardness and microstructures. When the hardness is lower than URC58, the abrasive wear resistance of the high speed steel mainly depends on its hardness. But when the hardness is higher than HRC58, it mainly depends on the amount, morphology and distribution of VC in the matrix. Many spherical or lumpy VC carbides are obtained when vanadium and carbon content is up to 8.15-10.20 and 2.70-3.15%. The excellent abrasive wear resistance would be obtained if such VC carbides disperse uniformly in the hardened matrix of high speed steel after quenched at 1050 degrees C and tempered at 550 degrees C. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：641 / 648

页数：8

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