WEAR OF TAC AND TIC STEEL COMPOSITE HARDFACINGS BY SOFT AND HARD ABRASIVES

被引：15

作者：

AXEN, N ^{[1
]}

ZUMGAHR, KH ^{[1
]}

机构：

[1] FORSCHUNGSZENTRUM JULICH, INST MAT FORSCH 1, W-5170 JULICH 1, GERMANY

来源：

MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK | 1992年 / 23卷 / 10期

关键词：

D O I：

10.1002/mawe.19920231008

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

TiC and TaC steel composite layers were produced on a die steel 90MnCrV8 (0.9% C) by using a CO2-laser. The hard particles of a median size of 3 mu, and 30 mum, respectively, and a volume fraction of about 50% were homogeneously distributed in the steel matrix. Hardness of the martensitic matrix was variied by heat treatments. Wear resistance of the hardfacings against flint and SiC with varying mesh sizes were measured using an abrasive wear tester at laboratory atmosphere. Abrasive wear resistance was increased by more than one magnitude of order by embedding the hard phases in the steel surface. The results showed the effects of type and size of the hard phase, hardness of the steel matrix and also of the type and mesh size of abrasive grits on wear resistance. Experimental results are discussed as a function of those parameters and theoretical models are developed.

引用

页码：360 / 367

页数：8