Effects of Deformation Heating on Constitutive Analysis of a New Al-Mg-Si-Cu Alloy during Hot Compression

Dong Yang; Yong Hong Quan; Huan Zhao; Zhi Qing Zhang; Guang Jie Huang; Qing Liu

doi:10.4028/www.scientific.net/MSF.794-796.1263

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HomeMaterials Science ForumMaterials Science Forum Vols. 794-796Effects of Deformation Heating on Constitutive...

Effects of Deformation Heating on Constitutive Analysis of a New Al-Mg-Si-Cu Alloy during Hot Compression

Abstract:

A new Al-Mg-Si-Cu aluminum alloy was hot compressed at temperatures between 320°Cand 530°Cand strain rates between 0.001 s¹ and 10 s¹ using a Gleeble-1500 thermo-simulation machine. The effects of deformation heating on flow stress were analyzed and corrected, and a comparison was made of hyperbolic-sine constitutive equations with and without correction. The results show that the deformation heating apparently increases the flow stress at strain rates of 1 s¹, 10 s¹. The thermal activation energy values were 325.12 KJ/mol and 304.47 KJ/mol before and after correction, respectively.

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Materials Science Forum (Volumes 794-796)

Pages:

1263-1268

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.794-796.1263

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Online since:

June 2014

Authors:

Dong Yang, Yong Hong Quan, Huan Zhao, Zhi Qing Zhang, Guang Jie Huang*, Qing Liu

Keywords:

Al-Mg-Si-Cu Alloy, Constitutive Equations, Deformation Heating, Thermal Activation Energy

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