Effect of VC Addition on Microstructure and Mechanical Properties of Ultrafine Grained WC-Co Alloys

Abstract:

This study was focused on the effect of VC addition on the microstructure and mechanical properties of the prepared ultrafine grained cemented carbides. VC was added to the rawoxide materials which were synthesized to the WC-Co composite powder by the in-situ reduction and carbonization process. The ultrafine grained WC-Co alloys were fabricated by the spark plasma sintering technique using the prepared WC-Co composite powder. The phase constitution, microstructure characteristics and mechanical properties of the sintered ultrafine grained cemented carbides were analyzed quantitatively. The study proposed that VC plays a significant role in decreaseing the grain size of the prepared WC-Co alloy. The ultrafine grained WC-Co alloy with high comprehensive properties can be obtained as an appropriate addition of VC in the developed process.

• Periodical: Advanced Materials Research (Volume 893)
• Pages: 444-448
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.893.444
• Online since: February 2014
• Authors: Xue Mei Liu*, Xiao Yan Song, Hai Bin Wang, Yang Gao, Yao Wang
• Keywords: Mechanical Property, Microstructure, Spark Plasma Sintering (SPS), VC, WC-Co Alloys

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