Effect of temperature on fast forging process of Mg-Ni samples for fast formation of Mg2Ni for hydrogen storage |
| |
| Affiliation: | 1. Physics Department, 15 Bukireva, 614990, Perm State University, Russia;2. Mathematics Department, 15 Bukireva, 614990, Perm State University, Russia;3. Institut Néel, CNRS & UGA, Dept QUEST, 38042, Grenoble Cedex 9, France;1. College of Chemical Engineering, Huaqiao University, Xiamen, 361021, China;2. Research Center of Environment-Friendly Functional Materials, Ministry of Education, Huaqiao University, Xiamen 361021, China;3. College of Materials Science and Engineering, Huaqiao University, Xiamen, 361021, China;1. Department of Chemical Systems Engineering, Nagoya University, Nagoya, 464-8603, Japan;2. Material and Property Analysis Laboratory, Technology Research Division, LIXIL Corporation, 2-1-1 Ojima, Koutou, Tokyo, 136-8535, Japan;3. Department of Energy Engineering and Science, Nagoya University, Nagoya, 464-8603, Japan;1. Department of Physics, Zhejiang University, Hangzhou, 310027, PR China;2. Zhejiang Province Key Laboratory of Quantum Technology and Device, Zhejiang University, Hangzhou, 310027, PR China;1. Université de Lorraine, Laboratory of Excellence on Design of Alloy Metals for Low-mass Structures (DAMAS), Metz F-57045, France;2. Université de Lorraine, Laboratoire d’Etude des Microstructures et de Mécanique des Matériaux, LEM3 UMR 7239, 7 Rue Félix Savart, BP 15082, Metz F-57073, France;3. WPI, International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Fukuoka, Japan;4. Department of Materials Science and Engineering, Faculty of Engineering, Kyushu University, Fukuoka, Japan;5. International Research Center for Hydrogen Energy, Kyushu University, Fukuoka, Japan;6. Kyusyu University Platform of Inter/Transdisciplinary Energy Research, Fukuoka, Japan;1. Department of Materials Science and Engineering, Indian Institute of Technology, Kanpur 208016, India;2. Center for Energy Materials Research, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea;1. School of Material and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010, China;2. Inner Mongolia Key Laboratory of New Metal Materials, Baotou 014010, China |
| |
| Abstract: | Fast-Forging was used as a Severe Plastic Deformation technique to process Mg/Ni fine powder mixtures at a ratio corresponding to the eutectic composition. The samples were processed at different temperature, increased successively from room temperature up to above 500 °C. The one shock forging operation led to a reduction rate comprised between 80 to more than 90% depending of the applied temperature. Interestingly, a threshold temperature was pointed out for which amounts of the binary Mg2Ni alloy were directly synthesized in increasing proportions when increasing temperature. A maximum amount of Mg2Ni was synthesized according the nominal proportions at the highest applied temperature. Besides, numerical simulations were developed to consider and integrate to the forging process, the heat arising from the mechanical energy at deformation. Interestingly the total temperature at shock – heat applied to and heat developed in – indicates that the threshold temperature correspond well with the eutectic temperature as reported in the phase diagram. Early hydrogenation cycles suggest that both mechanical defects in brittle Mg and presence of amounts of Mg2Ni as catalyst should be combined to optimize the hydrogenation characteristics. |
| |
| Keywords: | Fast forging Mg-Ni phase diagram Numerical simulations |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
