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Development of a da...
Development of a database for cemented carbides : Thermodynamic modeling and experiments
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Frisk, K. (författare)
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Dumitrescu, L. (författare)
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Ekroth, M. (författare)
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Jansson, B. (författare)
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Kruse, O. (författare)
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- Sundman, Bo (författare)
- KTH,Materialvetenskap
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(creator_code:org_t)
- 2001
- 2001
- Engelska.
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Ingår i: Journal of phase equilibria (Print). - 1054-9714 .- 1544-1032. ; 22:6, s. 645-655
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
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- A new database, for thermodynamic information for cemented carbides has been developed. A full description of the alloy system C-Co-N-Nb-Ta-Ti-W is presented. The work has involved both thermodynamic evaluations of lower order systems and experimental investigations. Full new assessments of the quaternary Ti-W-C-N, Ta-W-C-N, and Nb-W-C-N systems have been performed, including tests of the influence of model parameters on miscibility gaps in higher order systems. A new improved description of the Co-W-C system based on new experiments is used in the present work. The main results of the experimental work are measurements of the composition of the cubic carbide in selected equilibria; measurements of the temperatures of the liq + fcc + WC + gr. and liq + fcc + WC + M6C equilibria in the Co-W-C and Co-W-X-C (X = Ti, Ta, Nb) systems; and measurements of the solubility of Ti, Ta, and Nb in liquid in multicomponent alloys. The results of the assessments have been implemented into a new database. The database has successfully been used in a parallel project to simulate the formation of gamma -phase free zones in cemented carbides. A few other applications of industrial relevance are presented.
Nyckelord
- c-n systems
- phase-diagram
- ti-c
- w-c
- thermochemistry
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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