Preparation and characteristics of metal-carbide composite materials using Plasma Powder Melting method

Masahiro Anzai, Takeo Nakagawa

Research output: Contribution to journalArticle

Abstract

The plasma powder melting (PPM) method has been put into practical use for weld surface hardening. This study attempted to fabricate metal-carbide composite materials using PPM. Metal (Fe, Ni, Co alloy) and carbide (Cr3C2, NbC, WC) powders were melted by a plasma arc in graphite mold to obtain metal-carbide composite materials. In Fe-Cr3C2, Ni-Cr3C2, Fe-NbC, and Ni-NbC systems, the strength values were high in comparison with products without reinforcing. The strength is caused by change of matrix structure, dispersion of particles and residual stress between metal matrix and carbide. In all composites, bending modulus decreased monotonously with increasing carbide, and hardness increased. A 3-dimensional model of metal-carbide composites is presented.

Original languageEnglish
Pages (from-to)426-432
Number of pages7
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume37
Issue number3
Publication statusPublished - 1990 Apr
Externally publishedYes

Fingerprint

Powders
Carbides
Melting
Metals
Plasmas
Composite materials
Graphite
Hardening
Residual stresses
Welds
Hardness

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

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abstract = "The plasma powder melting (PPM) method has been put into practical use for weld surface hardening. This study attempted to fabricate metal-carbide composite materials using PPM. Metal (Fe, Ni, Co alloy) and carbide (Cr3C2, NbC, WC) powders were melted by a plasma arc in graphite mold to obtain metal-carbide composite materials. In Fe-Cr3C2, Ni-Cr3C2, Fe-NbC, and Ni-NbC systems, the strength values were high in comparison with products without reinforcing. The strength is caused by change of matrix structure, dispersion of particles and residual stress between metal matrix and carbide. In all composites, bending modulus decreased monotonously with increasing carbide, and hardness increased. A 3-dimensional model of metal-carbide composites is presented.",
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