Archives of Metallurgy and Materials
- Volume 66 Issue 4
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- Pages.1013-1018
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- 2021
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- 2300-1909(eISSN)
DOI QR Code
Warm Tensile Deformation Behavior and Constitutive Equation of Supersaturated Solid-Solutionized Al-9Mg Extruded Alloy
- Seung Y. Yang (Korea Institute of Industrial Technology, Advanced Process and Materials R&D Group) ;
- Bong H. Kim (Korea Institute of Industrial Technology, Advanced Process and Materials R&D Group) ;
- Da B. Lee (Korea Institute of Industrial Technology, Advanced Process and Materials R&D Group) ;
- Kweon H. Choi (Korea Institute of Industrial Technology, Advanced Process and Materials R&D Group) ;
- Nam S. Kim (Korea Institute of Industrial Technology, Advanced Process and Materials R&D Group) ;
- Seong H. Ha (Korea Institute of Industrial Technology, Advanced Process and Materials R&D Group) ;
- Young O. Yoon (Korea Institute of Industrial Technology, Advanced Process and Materials R&D Group) ;
- Hyun K. Lim (Korea Institute of Industrial Technology, Advanced Process and Materials R&D Group) ;
- Shae Kim (Korea Institute of Industrial Technology, Advanced Process and Materials R&D Group) ;
- Young J. Kim (Sungkyunkwan University, Advanced Mat erials Science & Engineering)
- Published : 20210000
Abstract
In this paper, as a purpose to apply the supersaturated solid-solutionized Al-9Mg alloy to the structural sheet parts of automotive, tensile tests were conducted under the various conditions and a constitutive equation was derived from the tensile test results. Al-9Mg alloy was produced using a special Mg master alloy containing Al2Ca during the casting process and extruded into the sheet. In order to study the deformation behavior of Al-9Mg alloy in warm temperature forming environments, tensile tests were conducted under the temperature of 373 K-573 K and the strain rate of 0.001/s~0.1/s. In addition, by using the raw data obtained from tensile tests, a constitutive equation of the Al-9Mg alloy was derived for predicting the optimized condition of the hot stamping process. Al-9Mg alloy showed uncommon deformation behavior at the 373 K and 473 K temperature conditions. The calculated curves from the constitutive equation well-matched with the measured curves from the experiments particularly under the low temperature and high strain rate conditions.