Effect of Vanadium and Carbon Content on the Sinterability of Water Atomised High Speed Steel Powders

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This paper presents the results of an investigation into the sintering behaviour of three vanadium enriched variants of T42 high-speed steel. Powders were prepared by water atomization with vanadium and carbon contents of 6-8 wt% and 2.2 -2.7 wt%, respectively. These were annealed, die pressed and sintered in vacuum. All three alloys were sintered to full density giving “as –sintered” microstructures comprising globular MC carbides dispersed in a martensitic matrix. Optimum sintering temperatures were in the range 1240 - 1250°C with lower optimum temperatures associated with higher carbon levels. Sintering characteristics are correlated with phase diagrams calculated using ThermoCalc™ software and TCFe2000 database. The implications for the design of sinterable vanadium containing high-speed steels are discussed.

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Periodical:

Materials Science Forum (Volumes 514-516)

Edited by:

Paula Maria Vilarinho

Pages:

529-533

DOI:

10.4028/www.scientific.net/MSF.514-516.529

Citation:

J. M.G. Mascarenhas et al., "Effect of Vanadium and Carbon Content on the Sinterability of Water Atomised High Speed Steel Powders", Materials Science Forum, Vols. 514-516, pp. 529-533, 2006

Online since:

May 2006

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$35.00

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