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Enthalpy of mixing of liquid Cu–Fe–Hf alloys at 1 873 K

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Published/Copyright: November 25, 2016
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 107 Issue 12

Abstract

In the ternary Cu–Fe–Hf system, the mixing enthalpies of liquid alloys were investigated at 1873 K using a high-temperature isoperibolic calorimeter. The experiments were performed along the sections xCu/xFe = 3/1, 1/1 at xHf = 0–0.47 and along the section xCu/xFe = 1/3 at xHf = 0–0.13. The limiting partial enthalpies of mixing of undercooled liquid hafnium in liquid Cu–Fe alloys, ΔmixH¯Hf∞, are (−122 ± 9) kJ mol−1 (section xCu/xFe = 3/1), (−106 ± 9) kJ mol−1 (section xCu/xFe = 1/1), and (−105 ± 2) kJ mol−1 (section xCu/xFe = 1/3). In the investigated composition range, the integral mixing enthalpies are sign-changing. For the integral mixing enthalpy, an analytical expression was obtained by the least squares fit of the experimental results using the Redlich–Kister–Muggianu polynomial.

Keywords: Enthalpy of mixing; Liquid alloys; High-temperature isoperibolic calorimeter
*Correspondence address, Dr. Liya Dreval, Metallurgical Department, Donbass State Engineering Academy, Shkadinova (Akademichnaya) Street 72, UA-84313 Kramatorsk, Ukraine, Tel.: +497116771242, Fax: +497116771248, E-mail: , Web: https://www.researchgate.net/profile/L_Dreval

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Received: 2016-08-07
Accepted: 2016-09-06
Published Online: 2016-11-25
Published in Print: 2016-12-08

© 2016, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.111439
Keywords for this article
Enthalpy of mixing; Liquid alloys; High-temperature isoperibolic calorimeter

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. Study of plastic deformation mechanisms in TA15 titanium alloy by combination of geometrically necessary and statistically-stored dislocations
  5. Effects of diffusion alloying on the microstructure and properties of TiC-reinforced Fe-based PM materials
  6. Enhancing the hardness/compression/damping response of magnesium by reinforcing with biocompatible silica nanoparticulates
  7. Corrosion behaviour of rolled A356 matrix composite reinforced with ceramic particles
  8. Experimental investigation of phase equilibria in the Nb–Si–Ta ternary system
  9. Enthalpy of mixing of liquid Cu–Fe–Hf alloys at 1 873 K
  10. Synthesis and properties evaluation of β-SiAlON prepared by mechanical alloying followed by different sintering technique
  11. Influence of germanate anomaly on elastic, structural, and optical properties of xNa2O-(99–x)[80GeO2:20PbO]-1Er2O3 lead–germanate glasses
  12. Short Communications
  13. Effects of martensite cold work on the reverse austenite formation
  14. Synthesis and field-emission characteristics of SiC nanowire forest
  15. DGM News
  16. DGM News
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