Effect of Ta Solute Concentration on the Microstructural Evolution in Immiscible Cu-Ta Alloys

B. C. Hornbuckle, T. Rojhirunsakool, M. Rajagopalan, T. Alam, G. P. Purja Pun, R. Banerjee, Kiran Solanki, Y. Mishin, L. J. Kecskes, K. A. Darling

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Abstract

The immiscible Cu-Ta system has garnered recent interest due to observations of high strength and thermal stability attributed to the formation of Ta-enriched particles. This work investigated a metastable Cu-1 at.% Ta solid solution produced via mechanical alloying followed by subsequent consolidation into a bulk specimen using equal channel angular extrusion at 973 K (700°C). Microstructural characterization revealed a decreased number density of Ta clusters, but with an equivalent particle size compared to a previously studied Cu-10 at.% Ta alloy. Molecular dynamic stimulations were performed to understand the thermal evolution of the Ta clusters. The cluster size distributions generated from the simulations were in good agreement with the experimental microstructure.

Original languageEnglish (US)
Pages (from-to)2802-2809
Number of pages8
JournalJOM
Volume67
Issue number12
DOIs
StatePublished - Dec 1 2015

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ASJC Scopus subject areas

  • Engineering(all)
  • Materials Science(all)

Cite this

Hornbuckle, B. C., Rojhirunsakool, T., Rajagopalan, M., Alam, T., Purja Pun, G. P., Banerjee, R., Solanki, K., Mishin, Y., Kecskes, L. J., & Darling, K. A. (2015). Effect of Ta Solute Concentration on the Microstructural Evolution in Immiscible Cu-Ta Alloys. JOM, 67(12), 2802-2809. https://doi.org/10.1007/s11837-015-1643-x