• Zerrouk, Latifa
• Lenda, Omar Ben
• Saad, Elmadani
• Saissi, Soukaina
• Benmaziane, Sara

Abstract

<jats:sec> <jats:title>Background:</jats:title> <jats:p>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 theheat treatments; for that, it is important to understand and control the growth of the austenite grains</jats:p> </jats:sec> <jats:sec> <jats:title>Objective:</jats:title> <jats:p>Modeling austenite grain growth by considering the effects of heating temperature, holdingtime, and initial austenite grain size on austenite grain growth.</jats:p> </jats:sec> <jats:sec> <jats:title>Methods:</jats:title> <jats:p>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 resultsand a combination of Arrhenius and Sellars type equations, a mathematical model of austenite graingrowth was developed</jats:p> </jats:sec> <jats:sec> <jats:title>Results:</jats:title> <jats:p>From the experimental part, it was found that the increase in heating temperature caused thedissolution 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.</jats:p> </jats:sec> <jats:sec> <jats:title>Conclusion:</jats:title> <jats:p>Based on statistical indicators and a comparison between experimental and predicted results, the ability of the model to predict austenite grain growth was confirmed.</jats:p> </jats:sec>

Topics

• impedance spectroscopy
• grain
• stainless steel
• grain size
• carbide
• size-exclusion chromatography
• grain growth