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Modelling of grain growth and its effect on mechanical properties of stainless steel components

Lookup NU author(s): Siva Shankar Alla, Dr Hemantha Yeddu

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Abstract

© 2021 Inderscience Enterprises Ltd.A 2D phase-field model is developed to study the grain growth behaviour and the effect of simulation parameters on grain growth. The effect of nitrogen on grain growth in 316LN stainless steels is studied by using phenomenological models, viz. Sellars and Beck’s models. The grain size-dependent yield strength values are used in the macroscale finite element simulations to predict the critical internal pressure required for yielding of an inlet nozzle of a nuclear reactor. Phase-field simulations show that the grain growth follows the relation D = Ctn. The phenomenological models show that the increase in nitrogen content gives rise to smaller grains and hence increases the yield strength of steels. The macroscale simulations show that the steels with higher nitrogen can withstand higher critical pressure.

Publication metadata

Author(s): Alla SS, Yeddu HK

Publication type: Article

Publication status: Published

Journal: International Journal of Computational Materials Science and Surface Engineering

Year: 2021

Volume: 10

Issue: 2

Pages: 101-111

Online publication date: 24/10/2021

Acceptance date: 02/04/2020

ISSN (print): 1753-3465

ISSN (electronic): 1753-3473

Publisher: Inderscience Publishers

URL: https://doi.org/10.1504/IJCMSSE.2021.118500

DOI: 10.1504/IJCMSSE.2021.118500

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