A New Constitutive Equation to Predict Single Peak Flow Stress Curves
Source abstract
Abstract
In this study a new constitutive equation, using the extrapolation of dynamic recovery (DRV) flow stress curve and kinetic equation for dynamic recrystallization (DRX), has been developed. This model is expressed in terms of characteristic points such as critical stress, critical strain, DRX steady state stress, and DRV saturation stress. Moreover, this analysis was done for the stress-strain curves under hot working condition for Ti-IF steel, but it is not dependent on the type of material and can be extended for any condition that a single peak dynamic recrystallization occurs. The results indicate that the stress-strain curves predicted by this model are in a good agreement with experimentally measured ones at all deformation conditions.
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Research context
OpenAlex topics: Metallurgy and Material Forming · Microstructure and Mechanical Properties of Steels · Metal Alloys Wear and Properties
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Affiliations
Graduate Student e-mail:
Assoc. Professor Department of Materials Science and Engineering Shiraz University Shiraz, 71345/1585, Iran e-mail:
References (15)
Show source-provided references
1. Constitutive Analysis in Hot Working10.1016/S0921-5093(01)01117-0 ↗
2. Factors Affecting Dynamic Recrystallization of Metals and Alloys10.1179/mst.1987.3.5.329 ↗
3. A Method to Predict Flow Stress Considering Dynamic Recrystallization During Hot Deformation10.1016/j.commatsci.2008.05.021 ↗
4. Modelling of Flow Curves for Single Peak Dynamic Recrystallization10.1016/j.matdes.2008.09.004 ↗
5. Modeling the Dynamic Recrystallization Under Multi Stage Hot Deformation10.1016/j.actamat.2004.06.022 ↗
6. Modelling of Flow Stress Characterizing Dynamic Recrystallization for Magnesium Alloy AZ31B10.1016/j.commatsci.2007.04.024 ↗
7. Study on Constitutive Relation in AISI 4140 Steel Subject to Large Strain at Elevated Temperature10.1016/S0924-0136(03)00742-8 ↗
8. Mathematical Modeling of the Stress-Strain Curves of Ti-IF Steel at High Temperature10.1016/j.jmatprotec.2005.06.072 ↗
9. A Mechanical Approach to Quantify Dynamic Recrystallization in Polycrystalline Metals10.1016/j.scriptamat.2004.10.011 ↗
10. Initiation of Dynamic Recrystallization in Constant Strain Rate Hot Deformation10.2355/isijinternational.43.684 ↗
11. Characteristic Points of Stress-Strain Curves at High Temperature
12. Prediction of Steel Flow Stresses at High Temperatures and Strain Rates10.1007/BF02667368 ↗
13. Peak Strength, Strain Hardening and Dynamic Restoration of A2 and M2 Tool Steels in Hot Deformation10.1016/S0921-5093(01)00976-5 ↗
14. Ebrahimi, R., 2003, “Hot and Warm Deformation of IF Steel,” Ph.D thesis, Isfahan University of Technology, Isfahan, Iran.
15. The Avrami Kinetics of Dynamic Recrystallization10.1016/j.actamat.2009.02.033 ↗