The Role of Hot Deformation Texture on Dynamic Transformation of Austenite to Ferrite in a 9%Cr Alloy Steel

Aashranth, B and Shankar, G and Samantaray, D and Suwas, S (2022) The Role of Hot Deformation Texture on Dynamic Transformation of Austenite to Ferrite in a 9%Cr Alloy Steel. In: JOM .

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Abstract

The dynamic transformation of austenite to ferrite occurs in various steels and has technological implications for grain refinement. Despite significant research, ambiguities persist about the nature of this transformation, its driving force, and the influencing parameters. In the current work, these outstanding issues are addressed through a study of hot deformation textures associated with the dynamic transformation in a 9Cr alloy steel. It is found that hot deformation textures of the parent and daughter phases contain crucial information about the nature of the transformation, and it is shown that the dynamic transformation is driven by stress rather than strain. Further, it bears signs of displacive rather than diffusional transformation and can be controlled through strain rate. © 2022, The Minerals, Metals & Materials Society.

Item Type:	Journal Article
Publication:	JOM
Publisher:	Springer
Additional Information:	The copyright for this article belongs to Springer
Keywords:	Alloy steel; Austenite; Chromium alloys; Chromium steel; Deformation; Grain refinement; Steel metallurgy; Strain rate; Textures, 'current; Cr alloys; Deformation texture; Diffusional transformations; Driving forces; Dynamic transformation; Grains refinement; Influencing parameters; ON dynamics; Strain-rates, Ferrite
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	19 May 2022 07:14
Last Modified:	19 May 2022 07:14
URI:	https://eprints.iisc.ac.in/id/eprint/72049

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