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Published in: Physics of Metals and Metallography 13/2021

01-12-2021 | STRENGTH AND PLASTICITY

Prediction of the Hot flow Behavior of AA1070 Aluminum Using the Phenomenological and Physically-Based Models

Authors: H. R. Rezaei Ashtiani, A. A. Shayanpoor

Published in: Physics of Metals and Metallography | Issue 13/2021

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Abstract

For the prediction of the hot flow behavior of materials, the constitutive models have developed in a form that feeds in computer code to simulate the response of workpiece under the process loading conditions. For this purpose, the hot compression tests were used at different ranges of temperature (623–773 K) and strain rate (0.005–0.5 s–1) for AA1070 aluminum. In this study constitutive equations based on the modified Johnson–Cook (JC) and modified Zerilli–Armstrong (ZA) models were established using the experimental data and were compared with an earlier study for the strain-compensated Arrhenius (strain-com Arr) model to predict the hot flow behavior of the pure aluminum. Then terms of the correlation coefficient (R), relative error (RE), and average absolute relative error (AARE) were used to evaluate the comparative predictability of these models. The R values for the modified J–C and modified Z–A are 0.9759 and 0.9760, respectively. Also, The AARE and mean RE values obtained for the modified J–C model are 9.085 and 1.6624% and for modified Z–A are 7.901 and 0.7840%, respectively.
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Metadata
Title
Prediction of the Hot flow Behavior of AA1070 Aluminum Using the Phenomenological and Physically-Based Models
Authors
H. R. Rezaei Ashtiani
A. A. Shayanpoor
Publication date
01-12-2021
Publisher
Pleiades Publishing
Published in
Physics of Metals and Metallography / Issue 13/2021
Print ISSN: 0031-918X
Electronic ISSN: 1555-6190
DOI
https://doi.org/10.1134/S0031918X21130160