Hardening of a rolled sheet submitted to radial and complex biaxial tensile loadings |
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| Affiliation: | 1. Ecole des Mines de Paris, CEMEF, BP. 207, 06904 Sophia Antipolis Cedex, France;2. Laboratoire Sols, Solides, Structures Domaine Universitaire, BP. n 53, 38041 Grenoble Cedex 9, France;1. Shanxi Key Laboratory of Advanced Magnesium-based Materials, Taiyuan University of Technology, Taiyuan 030024, PR China;2. College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China;3. Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY 40506, USA;1. School of Mechatronic Engineering, China University of Mining & Technology, XuZhou 221116, China;2. Jiangsu Key Laboratory of Mine Mechanical and Electrical Equipment, China University of Mining & Technology, XuZhou 221116, China;1. School of Mechanical Engineering, Tianjin University, Tianjin 300072, PR China;2. Tianjin Key Laboratory of Nonlinear Dynamics and Chaos Control, Tianjin 300072, PR China;3. Department of Mechanical and Aerospace Engineering, Rutgers University, New Brunswick, NJ 08903, USA;4. Department of Engineering Mechanics, School of Aeronautics and Astronautics, Zhejiang University, Hangzhou 310027, Zhejiang, PR China;1. Donbas National Academy of Civil Engineering and Architecture, Derzhavina, 2, Makeyevka, Donetsk region, 86123, Ukraine;2. St. Petersburg State Polytechnical University, Polytechnicheskaya, 29, Saint-Petersburg, 195251, Russia;1. National University of Science and Technology “MISIS”, Leninsky prospect, 4, Moscow 119049, Russia;2. Institute for Materials Research, Tohoku University, Katahira 2-1-1, Aoba-Ku, Sendai 980-8577, Japan;3. WPI Advanced Institute for Materials Research, Tohoku University, Katahira 2-1-1, Aoba-Ku, Sendai 980-8577, Japan |
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| Abstract: | Biaxial tensile tests are performed on cruciform specimens with the help of direct biaxial testing machine. Small offset-strain yield curves are detected on an aluminium alloy (AL1200) rolled sheet submitted to irreversible radial and complex biaxial tensile loadings. A predominant kinematic hardening and an important isotropic expansion are observed. A yield curve distortion is observed as well but, unlike the traction–torsion case, its intensity appears to be linked to the loading type. Moreover, the strain responses are analyzed in order to point out the pronounced anisotropy of the rolled sheet and to check if the sheet behavior is in agreement with a plastic flow associated with the yield curve. |
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