On the Origin of Recovery-Induced Strengthening in CoCrNi Alloy

Singh, VK and Jeevanaboina, K and Sahu, S and Bojjawar, G and Dova, K and Agarwal, S and Suwas, S and Makineni, SK and Ghosh, P (2024) On the Origin of Recovery-Induced Strengthening in CoCrNi Alloy. In: Advanced Engineering Materials .

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Abstract

Strengthening during low-temperature annealing is a common observation in several nanocrystalline and ultrafine-grained materials. The origin of such strengthening is generally attributed to various recovery processes leading to restricted dislocation motion. Herein, the observations on recovery-induced strengthening in cold-rolled (CR) equiatomic CoCrNi alloys are presented. An increase in hardness is observed for samples deformed to thickness reduction of 35�80 after 2 h of annealing at 500 °C. A detailed microstructural investigation of 80 CR and subsequently annealed samples suggests that both dislocation density and local chemical composition play important role in strengthening. Further, uniaxial tensile tests elucidate the importance of mobile dislocations on strength and ductility of annealed samples. © 2024 Wiley-VCH GmbH.

Item Type:	Journal Article
Publication:	Advanced Engineering Materials
Publisher:	John Wiley and Sons Inc
Additional Information:	The copyright for this article belongs to John Wiley and Sons Inc.
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	01 Aug 2024 06:52
Last Modified:	01 Aug 2024 06:52
URI:	http://eprints.iisc.ac.in/id/eprint/85765

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