Influence of carbon-partitioning treatment on the microstructure, mechanical properties and wear resistance of in situ VCp-reinforced Fe-matrix composite

The wear resistance of iron (Fe)-matrix materials could be improved through the in situ formation of vanadium carbide particles (VCp) with high hardness. However, brittleness and low impact toughness limit their application in several industries due to addition of higher carbon content. Carbon-parti...

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Bibliographic Details
Published in:International journal of minerals, metallurgy and materials metallurgy and materials, 2020, Vol.27 (1), p.100-111
Main Authors: Chen, Ping-hu, Zhang, Yun, Li, Rui-qing, Liu, Yan-xing, Zeng, Song-sheng
Format: Article
Language:English
Subjects:
Alpha iron
Carbon
Carbon content
Ceramics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Composites
Corrosion and Coatings
Glass
Impact strength
Materials Science
Matrix materials
Mechanical properties
Metal matrix composites
Metallic Materials
Microhardness
Microstructure
Natural Materials
Partitioning
Phase transitions
Retained austenite
Room temperature
Surfaces and Interfaces
Thin Films
Toughness
Tribology
Vanadium
Vanadium carbide
Wear resistance
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Summary:The wear resistance of iron (Fe)-matrix materials could be improved through the in situ formation of vanadium carbide particles (VCp) with high hardness. However, brittleness and low impact toughness limit their application in several industries due to addition of higher carbon content. Carbon-partitioning treatment plays an important role in tuning the microstructure and mechanical properties of in situ VCp-reinforced Fe-matrix composite. In this study, the influences of carbon-partitioning temperatures and times on the microstructure, mechanical properties, and wear resistance of in situ VCp-reinforced Fe-matrix composite were investigated. The experimental results indicated that a certain amount of retained austenite could be stabilized at room temperature through the carbon-partitioning treatment. Microhardness of in situ VCp-reinforced Fematrix composite under carbon-partitioning treatment could be decreased, but impact toughness was improved accordingly when wear resistance was enhanced. In addition, the enhancement of wear resistance could be attributed to transformation-induced plasticity (TRIP) effect, and phase transformation was caused from γ-Fe (face-centered cubic structure, fcc) to α-Fe (body-centered cubic structure, bcc) under a certain load.
ISSN:1674-4799
1869-103X
DOI:10.1007/s12613-019-1909-3