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Theoretical and Experimental Study of the Co-Cr-Mo System
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
2011 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The thermodynamic properties of the Co-Cr-Mo ternary system have been described. Available experimental data on the system have been assessed and applied to optimize the parameters used in the thermodynamic models within the Calphad method.

Meanwhile, samples were made by the powder metallurgical process and heat treated (sintered) at 1573 K to investigate the phase diagram data related to the intermetallic phases, such as σ, μ and R phases present in the system.

With the optimized thermodynamic description, we are able to fit most of the experimental data in the literature and from this work. However, the one phase field of R is too narrow in the present description. Furthermore, at 1573 K the extension of the phase boundary of σ toward the Co corner needs to be improved. In addition, the calculated phase diagram at 1573 K shows a fcc-bcc-σ three-phase equilibrium near the Co-Cr binary side. This is not shown in the experimentally determined ternary phase diagram but is necessary in order to match the recent data on the Co-Cr binary system.

Place, publisher, year, edition, pages
2011.
Keyword [en]
Co-Cr-Mo system, Calphad method, Thermodynamic description
National Category
Other Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-42584ISRN: KTH/MSE--11/33--SE+THERM/EXOAI: oai:DiVA.org:kth-42584DiVA: diva2:447253
Educational program
Master of Science in Engineering - Materials Design and Engineering
Uppsok
Technology
Available from: 2012-01-03 Created: 2011-10-11 Last updated: 2012-01-03Bibliographically approved

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CiteExportLink to record
Permanent link

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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
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