Numerical Simulation of Quenching and Pre-Stretching Residual Stress in 7085 Aluminum Alloy Plate

Abstract:

The finite element method (FEM) was used to study the quenching and pre-stretching residual stresses of the 7085 aluminum alloy plate, combining with experimental measurement. Quenching residual stress simulation results showed that the stress of the rolling-direction and transverse-direction in the center were 16.5MPa and 9.2MPa, respectively. The stress of the rolling-direction and transverse-direction on the surface were-33.8MPa and-40.4MPa, respectively. The quenching residual stress simulation results were in good agreement with the X-ray diffraction experimental results. As the pre-stretching ratio increases, the quenching residual stress reduction ratio increases. The ratio of 2.0~3.0% pre-stretching can effectively release the quenching residual stress in aluminum alloy plates. After 3.0% pre-stretching, the stress of the rolling-direction and transverse-direction in the center were 0.9MPa and 1.8MPa, respectively. The stress of the rolling-direction and transverse-direction on the surface were-3.6MPa and-7.1MPa, respectively. The quenching residual stress reduction ratio reached above 80%.

• Periodical: Materials Science Forum (Volume 852)
• Pages: 211-217
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.852.211
• Online since: April 2016
• Authors: Hai Long Cao, Xi Wu Li, Ya Nan Li, Hong Wei Yan, Zhi Hui Li, Yong An Zhang, Shu Hui Huang, Bai Qing Xiong
• Keywords: 7085 Aluminum Alloy Plate, Finite Element Method, Pre-Stretching, Quenching Residual Stress, X-Ray Diffraction Method

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