Surface Densification and Tribological Behavior of a PM Fe-2Cu-0.6C Material

Surface rolling was employed to fabricate a densified layer on a powder metallurgy Fe-2Cu-0.6C piece. The densified surface layer was 335 pm in thickness with a surface hardness of 330 HV 0.1. The pearlite lamellar spacing became narrower and the ferrite was refined. Friction and wear behaviors of t...

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Bibliographic Details
Published inEuropean Congress and Exhibition on Powder Metallurgy. European PM Conference Proceedings pp. 1 - 6
Main Authors Xiao, Zhiyu, Liu, Xiao, Guan, Hang-jian, Wen, Liping
Format Conference Proceeding
LanguageEnglish
Published Shrewsbury The European Powder Metallurgy Association 01.01.2016
Subjects
Abrasive wear
Coefficient of friction
Crack initiation
Crack propagation
Densification
Friction
Load
Metal fatigue
Pearlite
Porosity
Powder metallurgy
Skin pass rolling
Spalling
Surface hardness
Tribology
Wear mechanisms
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Summary:Surface rolling was employed to fabricate a densified layer on a powder metallurgy Fe-2Cu-0.6C piece. The densified surface layer was 335 pm in thickness with a surface hardness of 330 HV 0.1. The pearlite lamellar spacing became narrower and the ferrite was refined. Friction and wear behaviors of the surface densified layer were studied. Results indicated that both friction coefficient and wear volume of the rolled material were lower than that of the un-rolled material, while, the friction coefficient decreased and the wear volume increased as the load increased. Wear loss was caused by flake spalling and grooving. The main wear mechanism was abrasive wear. The surface densified layer with higher hardness, higher micro-strain and lower porosity can hinder the crack initiation and propagation and thus enhanced the wear resistance of the powder metallurgy material.
Bibliography:ObjectType-Conference Proceeding-1
SourceType-Conference Papers & Proceedings-1
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