Paper Title:
Constitutive Models for AZ31 Magnesium Alloys
  Abstract

The present investigation aims at studying and modelling the flow behaviour of the AZ31 magnesium alloy by means of torsion tests performed in extended ranges of temperature and strain rates. Two types of rheological models were considered. The former is based on the power law equation, whilst the latter is based on the Sellars and Tegart approach. The effectiveness of the two constitutive models in describing the flow behaviour of the AZ31 magnesium alloy under investigation was evaluated. It was observed that both the equations are able to predict the flow behaviour of the material at different temperatures and strain rates. In particular, the former is very effective in predicting the hardening stage of the flow curve, whilst the latter allows to fit the softening stage. The models were used for the finite element analysis of a complex extrusion process and the results, in terms of the load-stroke curves, compared to each other.

  Info
Periodical
Edited by
Luca Tomesani and Lorenzo Donati
Pages
87-94
DOI
10.4028/www.scientific.net/KEM.367.87
Citation
C. Bruni, L. Donati, M. El Mehtedi, M. Simoncini, "Constitutive Models for AZ31 Magnesium Alloys ", Key Engineering Materials, Vol. 367, pp. 87-94, 2008
Online since
February 2008
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Guo Zheng Quan, Ying Tong, Yan Wei Zhang, Jie Zhou
Abstract:A Kumar-type constitutive relationship of TA15 alloy was investigated by non-linear regression analysis, and the equations were established...
516
Authors: Zhong Tang Wang, Shi Hong Zhang, Ming Cheng, De Fu Li
Materials Processing Technology
Abstract:Abstract: It had been put forward that a new method to establish material constitutive model based on extrusion test, which was that the...
819
Authors: Biao Guo, Sui Cai Zhang, Chang Chun Ge
Chapter 1: Machinery and Engineering Applications
Abstract:The hot compressive deformation behavior of the superalloy was investigated at the temperature range from 1050 to 1140 and strain rate range...
154
Authors: Apichat Sanrutsadakorn, Vitoon Uthaisangsuk, Surasak Suranuntchai, Borpit Thossatheppitak
Chapter 3: Advanced Materials Science and Engineering
Abstract:Using compression test on a thermo-mechanical simulator/dilatometer, hot deformation behavior of steel AISI 4340 was studied in the...
863
Authors: Xia Li, Xiao Xia Li, Ming Yao Li, Xiao Chun Wu
Chapter 16: Material Forming, Machining and Joining, Testing and Evolution
Abstract:Thermo-mechanical experiments were carried out to study the effect of deformation speed and temperature on the behaviour of a non-quenched...
2843