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Experimental determination and thermodynamic calculation of the phase equilibria in the Co–Mn–Ta system

  • Cuiping Wang , Cancan Zhao , Zhong Lin and Xingjun Liu
Published/Copyright: December 5, 2014
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 105 Issue 12

Abstract

The phase equilibria in the Co-rich corner of the Co–Mn–Ta system were investigated by means of optical microscopy, electron probe microanalysis and X-ray diffraction. Six isothermal sections in the Co-rich corner of the Co–Mn–Ta ternary system at 1300°C, 1200°C, 1100°C, 1000°C, 900°C, 800°C were experimentally determined. On the basis of previous and present experimental data of the phase equilibria, the thermodynamic assessments of the Mn–Ta binary and Co–Mn–Ta ternary systems were carried out by using CALPHAD. The thermodynamic parameters of the Mn–Ta binary and the Co–Mn–Ta ternary systems have been optimized for reproducing the experimental results in each system. An agreement between the calculated results and experimental data is obtained.

Keywords: Co–Mn–Ta; Phase diagrams; CALPHAD
* Correspondence address, Prof. Xingjun Liu, Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005, P.R. China, Tel.: +86-592-2187888, Fax: +86-592-2187966, E-mail:

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Received: 2014-05-16
Accepted: 2014-07-09
Published Online: 2014-12-05
Published in Print: 2014-12-08

© 2014, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.111135
Keywords for this article
Co–Mn–Ta; Phase diagrams; CALPHAD

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. On the orientation dependence of grain boundary triple line energy in Cu
  5. Hydrogen storage kinetics of as-cast and spun (Mg24Ni10Cu2)100–xNdx (x = 0–20) alloys
  6. Segregation of phosphorus to ferrite grain boundaries during transformation in an Fe–P alloy
  7. A study on the pseudoelasticity of low temperature aged and thermomechanically treated Ti-51.5 at.% Ni shape memory alloy
  8. Experimental determination and thermodynamic calculation of the phase equilibria in the Co–Mn–Ta system
  9. 800°C isothermal section of the Co–Cr–Mo–Si quaternary system
  10. Phase fraction mapping in the as-cast microstructure of extrudable 6xxx aluminum alloys
  11. Effect of thixoforming on morphological changes in iron-bearing intermetallics and mechanical properties of Al–Si–Cu alloys
  12. The superplasticity of friction stir processed Al-5Mg alloy with additions of scandium and zirconium
  13. Short Communications
  14. Anti-corrosion behaviour of VE/GF coatings on mild steel
  15. Intermetallic phase stabilized Al/Pb metallic emulsion
  16. Synthesis of ultrafine powder (W,Ti)C by microwave heating in a stream of argon
  17. Fabrication and properties of porous silicon nitride ceramics via microwave sintering
  18. DGM News
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