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:: Volume 68, Issue 68 (Autumn 2022 2022) ::
Vol.68 No. 68 pp. 39-48 Back to browse issues page
Ratcheting crystal plasticity modeling in microstructure of magnesium alloy under stress-controlled cyclic tensile loading with non-zero mean stress
Adel Basiri, Mohammad Azadi, Ahmad Ghasemi-Ghalebahman
Abstract:   (286 Views)
Todays, the requirement of lowering the vehicle weight for the reduction of the fuel consumption and emissions, one of the methods considered by designers is to use the ligh magnesium alloy under cylclic loadings. In this article, considering the microstructure of the AZ91D magnesium alloy, its crystalline structure, a model for predicting the ratcheting behavior of this alloy was adapted and verified based on experimental data. The crystallographic texture of this alloy will be introduced into the model respecting the manufacturing process of the shaping conditions. The proposed model, in order to simulate the ratcheting deformation, had an acceptable accuracy. However, the values of the ratcheting strain were over-predicted. Moreover, the crystal plasticity model could simulate the first and second stages of ratcheting, hardening effects, mean stress, and stress amplitude, with a higher accuracy.
 
Article number: 5
Keywords: Microstructural model, Crystal plasticity, Magnesium alloy, Fatigue, Ratcheting
Full-Text [PDF 3540 kb]   (74 Downloads)    
Type of Study: Research Study | Subject: Materials and Manufacturing Processes of Engine Components
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Basiri A, Azadi M, Ghasemi-Ghalebahman A. Ratcheting crystal plasticity modeling in microstructure of magnesium alloy under stress-controlled cyclic tensile loading with non-zero mean stress. JER 2022; 68 (68) :39-48
URL: http://engineresearch.ir/article-1-841-en.html


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Volume 68, Issue 68 (Autumn 2022 2022) Back to browse issues page
فصلنامه تحقیقات موتور The Journal of Engine Research
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