Effect of elasto-plastic compatibility of grains on void-initiation criteria in low-carbon steel

Karmakar, A and Barat, K (2019) Effect of elasto-plastic compatibility of grains on void-initiation criteria in low-carbon steel. Philosophical Magazine Letters, 99 (7). pp. 261-273. ISSN 09500839

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Abstract

The present study provides evidence for the role of ferrite-grain-size distributions on the occurrence of void initiation in a low-carbon steel. Various thermomechanical treatments were undertaken to create ultrafine, bimodal and coarse distributions of ferrite grain sizes. A two-parameter characterisation of probable void initiation sites is proposed, namely an elastic modulus difference and a difference in Schmid factor of the grains surrounding the void. All microstructures were categorised based on the ability to facilitate or resist void nucleation. For coarse grains, the elastic modulus and the Schmid factor differences are the highest, while they are intermediate for ultrafine grains and the lowest for the bimodal microstructure.

Item Type:	Article
Subjects:	CHEMISTRY AND MATERIALS > Chemistry and Materials (General) CHEMISTRY AND MATERIALS > Inorganic, Organic and Physical Chemistry
Depositing User:	Mrs SK Pratibha
Date Deposited:	30 Mar 2021 09:07
Last Modified:	30 Mar 2021 09:07
URI:	http://nal-ir.nal.res.in/id/eprint/13382

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