Experimental and numerical assessment of energy absorption capacity of thin-walled Al 5083 tube produced by PTCAP process |
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| Affiliation: | 1. National Key Lab for Precision Hot Processing of Metals, Harbin Institute of Technology, Harbin, 150001, China;2. College of Materials Science and Engineering, Taiyuan University of Technology, Tai''yuan, 030024, China;3. Institute of High Pressure Fluid Forming, Harbin Institute of Technology, Harbin, 150001, China;1. IMDEA Materials Institute, Calle Eric Kandel 2, Getafe, 28906 Madrid, Spain;2. Department of Materials Science, Polytechnic University of Madrid, E.T.S. de Ingenieros de Caminos, 28040 Madrid, Spain;3. Institute of Physics of Advanced Materials, Ufa State Aviation Technical University, K. Marx str. 12, Ufa 45000, Russia;4. Laboratory for Mechanics of Bulk Nanostructured Materials, Saint Petersburg State University, Universitetsky pr. 28, 198504 Peterhof, Saint Petersburg, Russia;5. Peter the Great St. Petersburg Polytechnic University, Saint-Petersburg 195251, Russia |
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| Abstract: | The energy absorption capacity of the Al5083 thin-walled tube produced by parallel tubular angular pressing (PTCAP) process was evaluated. Also, microstructure, mechanical properties, and anisotropy coefficients were studied in the peripheral and axial directions. Results showed that values of energy absorption decreased with processing pass increasing and the values for the unprocessed, first and second passes were obtained to be 167, 161.4 and 160.7 J, respectively. The differences between the simulation results for the energy absorption values and their experimental values for the unprocessed, the first and the second PTCAP passes samples are about 5%, 10%, and 13%, respectively. The energy absorption capacity was related to the anisotropy coefficient and microstructure. The results demonstrated that grain refinement occurred and ultimate tensile strength (UTS) and microhardness after the first and second PTCAP passes were enhanced, while the increase rate in the first pass was much severer. Also, by applying PTCAP, the deformation modes were altered, such that the deformation mode of the annealed tube was quite symmetrical and circular while for the first and second passes there have been triple and double lobes diamond. The results of the numerical simulation for the deformation mode of the annealed and PTCAPed tubes were consistent with the experimental results. The deformation mode of tubes is dependent on their mechanical properties and variation of the mechanical properties during PTCAP process. |
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| Keywords: | energy absorption Al 5083 ultra-fine grained aluminum alloy thin-walled tube severe plastic deformation anisotropy coefficient |
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