Temperature Dependent Constitutive Modeling for Magnesium Alloy Sheet

Journal Article · Tue Jun 15 00:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3457496· OSTI ID:21366763

Lee, Jong K ^[1]; Lee, June K ^[2]; Kim, Hyung S ^[3]; Kim, Heon Y ^[4]

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1. Department of Mechanical Engineering, Korea Polytechnic University (Korea, Republic of)
2. Department of Mechanical Engineering, Ohio State University (United States)
3. Department of Mechanical Design, Induk University (Korea, Republic of)
4. Division of Mechanical Engineering and Mechatronics, Kangwon National University (Korea, Republic of)

Magnesium alloys have been increasingly used in automotive and electronic industries because of their excellent strength to weight ratio and EMI shielding properties. However, magnesium alloys have low formability at room temperature due to their unique mechanical behavior (twinning and untwining), prompting for forming at an elevated temperature. In this study, a temperature dependent constitutive model for magnesium alloy (AZ31B) sheet is developed. A hardening law based on non linear kinematic hardening model is used to consider Bauschinger effect properly. Material parameters are determined from a series of uni-axial cyclic experiments (T-C-T or C-T-C) with the temperature ranging 150-250 deg. C. The influence of temperature on the constitutive equation is introduced by the material parameters assumed to be functions of temperature. Fitting process of the assumed model to measured data is presented and the results are compared.

• OSTI ID: 21366763
• Journal Information: AIP Conference Proceedings, Vol. 1252, Issue 1; Conference: NUMIFORM 2010: 10. international conference on numerical methods in industrial forming processes dedicated to Professor O. C. Zienkiewicz (1921-2009), Pohang (Korea, Republic of), 13-17 Jun 2010; Other Information: DOI: 10.1063/1.3457496; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COMPRESSION STRENGTH
EQUATIONS
HARDENING
INDUSTRY
MAGNESIUM ALLOY-AZ31B
NONLINEAR PROBLEMS
SHIELDING
SIMULATION
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0273-0400 K
TEMPERATURE RANGE 0400-1000 K
TESTING
TWINNING
ALLOYS
ALUMINIUM ALLOYS
MAGNESIUM ALLOYS
MAGNESIUM BASE ALLOYS
MANGANESE ADDITIONS
MANGANESE ALLOYS
MECHANICAL PROPERTIES
TEMPERATURE RANGE
TRANSITION ELEMENT ALLOYS
ZINC ALLOYS