Distribution Characteristics of Alloy Elements in VC Particle Reinforced Composite Wear Resistant Alloy under Different Mn Contents

Two kinds of VCp reinforced composite wear-resistant alloys with different Mn contents were developed and the Q＆P heat treatment process was adopted in order to develop a kind of composite wear-resistant alloy with higher toughness.The effects of different Mn contents and different carbon partition time on surface distribution of the main alloy elements were largely studied.It lays a foundation for the research and development of the high toughness wear resistant alloy.The results show that most of the V and Ti elements precipitate in form of carbides with very little or none of themselves soluble in the matrix due to the strong carbides forming features of V and Ti.Cr and Mo exist in both carbides and matrix,which form eutectics with VC and Ti C or dissolve in the matrix to improve the hardenability of the alloy.Mn is mainly soluble and more evenly distributed in the matrix.The localized Mn enrichment occurs with the increase of Mn content.However,Mn element is gradually of uniform distribution with increase in the carbon partition time.This study provides a theoretical basis for the application of I＆Q＆P process to VCp reinforced composite wear-resistant alloys.