Sintering, microstructure and properties of WC-AISI304 powder composites

Tungsten carbide-stainless steel (AISI 304) based composites were successfully prepared by powder metallurgy routes using vacuum sintering at a maximum temperature of 1500 degrees C. The effects of the binder amount (between 6 and 15 wt.%) on the phase composition, microstructure and mechanical prop...

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Bibliographic Details
Main Author: Marques, B. J. (author)
Other Authors: Fernandes, C. M. (author), Senos, A. M. R. (author)
Format: article
Language:eng
Published: 1000
Subjects:
STAINLESS-STEEL
FRACTURE-TOUGHNESS
RICH BINDERS
WC
PARTICLES
HARDMETALS
CARBIDES
HARDNESS
PHASE
CO
Online Access:http://hdl.handle.net/10773/20698
Country:Portugal
Oai:oai:ria.ua.pt:10773/20698
Description
Summary:Tungsten carbide-stainless steel (AISI 304) based composites were successfully prepared by powder metallurgy routes using vacuum sintering at a maximum temperature of 1500 degrees C. The effects of the binder amount (between 6 and 15 wt.%) on the phase composition, microstructure and mechanical properties, namely hardness and fracture toughness, were investigated. Appreciable amount of (M,W)(6)C up to 12 wt.% was detected, especially for the higher SS contents. However, a good compromise between toughness and hardness was observed. Besides that, improved oxidation resistance was noticed in WC-SS based composites compared with WC-Co composites. The results are discussed having in mind the correlation between chemical composition, phase composition, microstructure and mechanical behavior. (C) 2013 Elsevier B. V. All rights reserved.

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