Characterization of oxide dispersed AlCoCrFe high entropy alloy synthesized by mechanical alloying and spark plasma sintering

Praveen, S. ; Anupam, Ameey ; Sirasani, Teja ; Murty, B. S. ; Kottada, Ravi S. (2013) Characterization of oxide dispersed AlCoCrFe high entropy alloy synthesized by mechanical alloying and spark plasma sintering Transactions of the Indian Institute of Metals, 66 (4). pp. 369-373. ISSN 0972-2815

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Official URL: https://link.springer.com/article/10.1007/s12666-0...

Related URL: http://dx.doi.org/10.1007/s12666-013-0268-4

Abstract

The present study deals with phase evolution of oxide dispersed AlCoCrFe high entropy alloy during mechanical alloying and spark plasma sintering. Mechanical alloying of AlCoCrFe resulted in a single BCC phase. However, ordering of BCC phase with evolution of chromium carbide and sigma phase were observed after spark plasma sintering. High hardness of 1,050 ± 20 HV1 and 1,070 ± 20 HV1 was observed for AlCoCrFe high entropy alloy without and with oxide dispersion, respectively. Significant contribution from solid solution strengthening effect in high entropy alloys appears to have overwhelmed the effect of oxide dispersion on hardness.

Item Type:Article
Source:Copyright of this article belongs to Springer Verlag.
Keywords:Phase Evolution; Mechanical Alloying; Oxide Dispersion; Solid Solution Strengthening Effect
ID Code:110911
Deposited On:06 Dec 2017 11:05
Last Modified:06 Dec 2017 11:05

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