Influences of Ball-Milled Time on Properties and Microstructure of Ultrafine WC-10Co Cemented Carbide

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Abstract:

WC-10Co nanocomposite powders prepared by spray pyrogenation-continuous reduction and carburization technology were consolidated by vacuum sintering plus hot isostatic pressing (HIP). Influences of ball-milled time on properties and microstructure of ultrafine WC-10Co cemented carbide were investigated. The results show that ultrafine WC-10Co cemented carbides can reach 99.79% relative density, and transverse rupture strength is more than 3750MPa, Rockwell A hardness is more than 92.6, the average grain size is less than 440 nm, when ball-milled time is 48 hours, ultrafine WC-10Co cemented carbide with excellent properties and fine microstructure is obtained. The optimum ball-milling time is 48 hours.

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Periodical:

Solid State Phenomena (Volumes 121-123)

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159-162

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March 2007

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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[1] C. H. Allibert: Int. J. Ref. Met. Hard Mater. Vol. 19(2001), P. 53.

Google Scholar

[2] Hans-Olof. Andrén: Mater. Chem. Phys. Vol. 67(2001), P. 209.

Google Scholar

[3] A. Upadhyaya, D. Sarathy and G. Wagner: Mater. Des. Vol. 22(2001), P. 499.

Google Scholar

[4] D. F. Carroll: Int. J. Ref. Met. Hard Mater. Vol. 17(1999), P. 123.

Google Scholar

[5] G. Gille, B. Szesny, K. Dreyer, et al: Int. J. Ref. Met. Hard Mater. Vol. 20(2002) P. 3.

Google Scholar

[6] G.Q. Shao, X.L. Duan, J.R. Xie, et al: Rev. Adv. Mater. Sci. Vol. 5(2003), P. 281.

Google Scholar

[7] G.Q. Shao, X.L. Duan, J.R. Xie, et al: Chinese Patent, Appl. 99116597. 7, 7, (1999).

Google Scholar

[8] H. Ferkel and R. J. Hellmig: Nanostruct. Mater. Vol. 11(1999), P. 617 0. 0 0. 2 0. 4 0. 6 0. 8 1. 0 1. 2 1. 4 1. 6 1. 8 2. 0 0 5 10 15 20 25 30 35 40 d Grain size/μm Grain proportion.

Google Scholar