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Kinetics of the discontinuous precipitation of a liquid phase in Cu–In alloys

  • S. K. Gautam and S. P. Gupta EMAIL logo
Published/Copyright: February 5, 2022
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 94 Issue 11

Abstract

The morphology and growth kinetics of the discontinuous precipitation of liquid and depleted solid phases from a supersaturated solid solution has been studied. The transformation was carried out in the two-phase (liquid + solid α) field in the temperature range 996–1050 K in two Cu– In alloys containing 8.9 and 9.5 at.% In. A lamellar structure consisting of alternate lamellae of α and liquid phases has been observed to grow from the grain boundaries of the supersaturated α solid solution. The nucleation of the liquid droplets occurred at the grain boundary and a thin layer of liquid formed between the droplets. The liquid film started migrating resulting in the development of a lamellar structure. In both alloys the growth rate increased with increasing temperature of transformation but the interlamellar spacing decreased with increasing transformation temperature. The growth kinetics was analyzed using the models of Cahn and Petermann and Hornbogen and from a mass balance using Fick’s first law. From the diffusivity and activation energy values it can be concluded that the growth of the cellular structure occurs by solute transport through the liquid film.

Keywords: Lamellar growth of a liquid; Cellular growth of a liquid; Discontinuous precipitation of a liquid; Cu – In alloys
Prof. S. P. Gupta Department of Materials and Metallurgical Engineering Indian Institute of Technology Kanpur – 208016, India Tel.: +91 512 259 7648 Fax: +91 512 259 7505/259 0260/259 0007

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Received: 2003-03-04
Published Online: 2022-02-05

© 2003 Carl Hanser Verlag, München

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  17. Aktuelle Arbeiten in der Konstitution
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https://doi.org/10.1515/ijmr-2003-0225
Keywords for this article
Lamellar growth of a liquid; Cellular growth of a liquid; Discontinuous precipitation of a liquid; Cu – In alloys

Articles in the same Issue

  1. Frontmatter
  2. Articles/Aufsätze
  3. Grain boundary diffusion and segregation of Ge in Cu: Radiotracer measurements in different kinetic regimes
  4. Thermal diffusivities of uniaxially cold-pressed Fe2Mo powders
  5. Dislocation structure and crystallite size distribution in plastically deformed Ti determined by X-ray peak profile analysis
  6. Modeling of texture evolution in copper under equal channel angular pressing
  7. Method for in situ texture investigation of recrystallization of Cu and Ti by high-energy synchrotron X-ray diffraction
  8. Contribution of dislocation substructures developed during cold rolling to the formation of rolling textures in Al–Mg alloys
  9. Controlled change in the plastic working conditions of metals in the plane state of strain
  10. Finite element analysis of the thermo-mechanical fatigue of DD8 single crystal nickel-based superalloy
  11. Factors influencing the extent of hydrogen-enhanced brittle cracking in a Cu-strengthened HSLA steel during monotonic loading
  12. Textures and precipitates in Ti-stabilized interstitial-free steel
  13. Coarsening kinetics of Cu particles in an Fe-1.5% Cu alloy
  14. Kinetics of the discontinuous precipitation of a liquid phase in Cu–In alloys
  15. Influence of homogenization on the processing map for hot working of as-cast Mg–2Zn–1Mn alloy
  16. Some characteristics of electrospark deposition
  17. Aktuelle Arbeiten in der Konstitution
  18. Notifications/Mitteilungen
  19. Personal/ Personelles
  20. DGM Events
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