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Title: Plastic Deformation Characteristics Of AZ31 Magnesium Alloy Sheets At Elevated Temperature

Abstract

Using lightweight materials is the emerging need in order to reduce the vehicle's energy consumption and pollutant emissions. Being a lightweight material, magnesium alloys are increasingly employed in the fabrication of automotive and electronic parts. Presently, magnesium alloys used in automotive and electronic parts are mainly processed by die casting. The die casting technology allows the manufacturing of parts with complex geometry. However, the mechanical properties of these parts often do not meet the requirements concerning the mechanical properties (e.g. endurance strength and ductility). A promising alternative can be forming process. The parts manufactured by forming could have fine-grained structure without porosity and improved mechanical properties such as endurance strength and ductility. Because magnesium alloy has low formability resulted form its small slip system at room temperature it is usually formed at elevated temperature. Due to a rapid increase of usage of magnesium sheets in automotive and electronic industry it is necessary to assure database for sheet metal formability and plastic yielding properties in order to optimize its usage. Especially, plastic yielding criterion is a critical property to predict plastic deformation of sheet metal parts in optimizing process using CAE simulation. Von-Mises yield criterion generally well predicts plastic deformation ofmore » steel sheets and Hill'1979 yield criterion predicts plastic deformation of aluminum sheets. In this study, using biaxial tensile test machine yield loci of AZ31 magnesium alloy sheet were obtained at elevated temperature. The yield loci ensured experimentally were compared with the theoretical predictions based on the Von-Mises, Hill, Logan-Hosford, and Barlat model.« less

Authors:
;  [1];  [2];  [3];  [4]
  1. Graduate School, Kyungpook National University, Deagu 702-701 (Korea, Republic of)
  2. Department of Materials Technology, Korea Institute of Machinery and Materials, Changwon 641-831 (Korea, Republic of)
  3. Digital Production Processing and Forming Team, Korea Institute of Industrial Technology, Incheon 406-800 (Korea, Republic of)
  4. Department of Mechanical Engineering, Kyoungpook National University, Deagu 702-701 (Korea, Republic of)
Publication Date:
OSTI Identifier:
21057353
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 908; Journal Issue: 1; Conference: NUMIFORM '07: 9. international conference on numerical methods in industrial forming processes, Porto (Portugal), 17-21 Jun 2007; Other Information: DOI: 10.1063/1.2740984; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALUMINIUM; CASTING; COMPUTERIZED SIMULATION; DUCTILITY; MAGNESIUM; MAGNESIUM ALLOYS; MANUFACTURING; NUMERICAL ANALYSIS; OPTIMIZATION; PLASTICITY; POROSITY; SHEETS; SLIP; STEELS; TEMPERATURE DEPENDENCE; TESTING; YIELD STRENGTH

Citation Formats

Park, Jingee, Lee, Jongshin, You, Bongsun, Choi, Seogou, and Kim, Youngsuk. Plastic Deformation Characteristics Of AZ31 Magnesium Alloy Sheets At Elevated Temperature. United States: N. p., 2007. Web. doi:10.1063/1.2740984.
Park, Jingee, Lee, Jongshin, You, Bongsun, Choi, Seogou, & Kim, Youngsuk. Plastic Deformation Characteristics Of AZ31 Magnesium Alloy Sheets At Elevated Temperature. United States. doi:10.1063/1.2740984.
Park, Jingee, Lee, Jongshin, You, Bongsun, Choi, Seogou, and Kim, Youngsuk. Thu . "Plastic Deformation Characteristics Of AZ31 Magnesium Alloy Sheets At Elevated Temperature". United States. doi:10.1063/1.2740984.
@article{osti_21057353,
title = {Plastic Deformation Characteristics Of AZ31 Magnesium Alloy Sheets At Elevated Temperature},
author = {Park, Jingee and Lee, Jongshin and You, Bongsun and Choi, Seogou and Kim, Youngsuk},
abstractNote = {Using lightweight materials is the emerging need in order to reduce the vehicle's energy consumption and pollutant emissions. Being a lightweight material, magnesium alloys are increasingly employed in the fabrication of automotive and electronic parts. Presently, magnesium alloys used in automotive and electronic parts are mainly processed by die casting. The die casting technology allows the manufacturing of parts with complex geometry. However, the mechanical properties of these parts often do not meet the requirements concerning the mechanical properties (e.g. endurance strength and ductility). A promising alternative can be forming process. The parts manufactured by forming could have fine-grained structure without porosity and improved mechanical properties such as endurance strength and ductility. Because magnesium alloy has low formability resulted form its small slip system at room temperature it is usually formed at elevated temperature. Due to a rapid increase of usage of magnesium sheets in automotive and electronic industry it is necessary to assure database for sheet metal formability and plastic yielding properties in order to optimize its usage. Especially, plastic yielding criterion is a critical property to predict plastic deformation of sheet metal parts in optimizing process using CAE simulation. Von-Mises yield criterion generally well predicts plastic deformation of steel sheets and Hill'1979 yield criterion predicts plastic deformation of aluminum sheets. In this study, using biaxial tensile test machine yield loci of AZ31 magnesium alloy sheet were obtained at elevated temperature. The yield loci ensured experimentally were compared with the theoretical predictions based on the Von-Mises, Hill, Logan-Hosford, and Barlat model.},
doi = {10.1063/1.2740984},
journal = {AIP Conference Proceedings},
number = 1,
volume = 908,
place = {United States},
year = {Thu May 17 00:00:00 EDT 2007},
month = {Thu May 17 00:00:00 EDT 2007}
}