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ISSN (Print): 2212-7976
ISSN (Online): 1874-477X

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Research Article

Modeling of Austenite Grain Growth Behavior for AISI 302 Stainless Steel

Author(s): Sara Benmaziane, Omar Ben Lenda*, Soukaina Saissi, Latifa Zerrouk and Elmadani Saad

Volume 15, Issue 5, 2022

Published on: 06 September, 2022

Page: [486 - 493] Pages: 8

DOI: 10.2174/2212797615666220816123154

Price: $65

Abstract

Background: Among the metals used in foundry, we find the austenitic stainless steels, which are used in several fields because of their mechanical properties, which can change during the heat treatments; for that, it is important to understand and control the growth of the austenite grains.

Objective: Modeling austenite grain growth by considering the effects of heating temperature, holding time, and initial austenite grain size on austenite grain growth.

Methods: In this paper, the austenite grain growth process of AISI 302 steel was studied in a temperature range of 900 to 1000 °C and a holding time of up to 360 minutes. Based on the experimental results and a combination of Arrhenius and Sellars type equations, a mathematical model of austenite grain growth was developed.

Results: From the experimental part, it was found that the increase in heating temperature caused the dissolution of carbides; therefore, the size of austenite grains grew faster, implying a higher growth rate. The prolongation of the holding time also led to the increase in the size of the austenite grains.

Conclusion: Based on statistical indicators and a comparison between experimental and predicted results, the ability of the model to predict austenite grain growth was confirmed.

Keywords: AISI 302 steel, austenite grain growth, heating temperature, holding time, mathematical model

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