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Prediction of solidification path and carbide precipitation in Fe-C-V-Cr-Mo-W high speed steels
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Applied Process Metallurgy.
2012 (English)In: MCWASP XIII: International Conference On Modeling Of Casting, Welding And Advanced Solidification Processes, Institute of Physics (IOP), 2012, no 1, 012061- p.Conference paper (Refereed)
Abstract [en]

The solidification path and precipitation of carbides in the Fe-C-V-Cr-Mo-W high speed steel system are predicted with the help of thermodynamic equilibrium calculations. The Partial Equilibrium (PE) approximation is favoured. According to experimental data for high speed steel samples, the precipitating solidification sequence of carbides, including nature, composition and amount are discussed as a function of the nominal composition of C and V. The results show that the solidification path can be reasonably predicted by the Partial Equilibrium approximation for cooling rate lower than 10 K min -1. The experimental results suffer from the sensitivity limitation of the characterization methods used when the phase fraction becomes too small.

Place, publisher, year, edition, pages
Institute of Physics (IOP), 2012. no 1, 012061- p.
, IOP Conference Series: Materials Science and Engineering, ISSN 1757-8981 ; 33
Keyword [en]
Carbide precipitation, Characterization methods, Experimental datum, Nominal composition, Partial equilibrium, Solidification paths, Solidification sequence, Thermodynamic equilibrium calculation, Carbides, Lasers, Welding, Solidification
National Category
Metallurgy and Metallic Materials
URN: urn:nbn:se:kth:diva-132113DOI: 10.1088/1757-899X/33/1/012061ISI: 000307779900061ScopusID: 2-s2.0-84877893462OAI: diva2:658272
13th International Conference on Modeling of Casting, Welding and Advanced Solidification Processes, MCWASP 2012; Schladming; Austria; 17 June 2012 through 22 June 2012

QC 20131021

Available from: 2013-10-21 Created: 2013-10-21 Last updated: 2013-10-21Bibliographically approved

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Nakajima, Keiji
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