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Affiliation of Author(s):材料科学与技术学院

Journal:MATERIALS SCIENCE AND TECHNOLOGY

Key Words:Powder metallurgy vanadium microstructure mechanical properties

Abstract:In this research, the microstructure and mechanical properties of Fe-1.8Ni-0.5Mo-2Cu-0.45C powder metallurgy (PM) steels with 0-0.3% vanadium were investigated by optical microscopy, scanning electron microscopy, transverse rupture, hardness and tribological tests. It is revealed that the volume fraction of polygonal ferrite in the sintered PM steels increased with the increasing of V addition, and more fine V(C,N) particles were formed during the sintering process. The enhancement of transverse rupture strength of the sintered and heat-treated PM steels with V addition was due to the grain refinement and precipitation strengthening effect The friction coefficient the heat-treated steels decreased with an increase in V addition, whereas the wear loss increased.

ISSN No.:0267-0836

Translation or Not:no

Date of Publication:2018-01-01

Co-author:汤志浩,lxq,huangxin,李浩浩,黎东,邹育文

Correspondence Author:Liu Zili