# 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

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

## 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 language English (US) 2802-2809 8 JOM 67 12 https://doi.org/10.1007/s11837-015-1643-x Published - Dec 1 2015

## ASJC Scopus subject areas

• Materials Science(all)
• Engineering(all)

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