Effect of Cold Isostatic Pressing on the Mechanical Properties of WC-8Co Cemented Carbide for Friction Stir Welding Tool

Chen Zhang; Bing Liang Liang; Yun Long Ai; Chang Hong Liu

doi:10.4028/www.scientific.net/AMM.563.107

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 563Effect of Cold Isostatic Pressing on the...

Effect of Cold Isostatic Pressing on the Mechanical Properties of WC-8Co Cemented Carbide for Friction Stir Welding Tool

Abstract:

WC-8Co cemented carbide specimens were prepared via vacuum sintering. The effects of cold isostatic pressing (CIP) on microstructure and mechanical properties were investigated. The results show that only WC and Co₃W₃C (γ-phase) were detected by XRD without any else phases, even though Co. Dense WC-8Co cemented carbide samples were obtained and relative density reached over 98%. The pressing method, instead of pressure, took an important role in the mechanical properties of WC-8Co cemented carbide. K_IC and TRS of WC-8Co cemented carbide were improved at least 27% and 24%, respectively, by the use of CIP. WC-8Co cemented carbide with excellent mechanical properties (HRA>93.5, K_IC>11MPa·m^1/2, TRS>870MPa) was obtained by using CIP.

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Periodical:

Applied Mechanics and Materials (Volume 563)

Pages:

107-111

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.563.107

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Online since:

May 2014

Authors:

Chen Zhang, Bing Liang Liang*, Yun Long Ai, Chang Hong Liu

Keywords:

Cold Isostatic Pressing, Friction Stir Welding Tool, Mechanical Property, WC-8Co

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