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Influence of impact energy on work hardening ability of austenitic manganese steel and its mechanism |
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| Authors: | Li Xiaoyun Wu Wei Zu Fangqiu Liu Lanjun Zhang Xianfeng |
| Affiliation: | 1. Engineering Training Center, Hefei University of Technology, Hefei 230601, China;School of Materials Science and Engineering,Hefei University of Technology, Hefei 230009, China 2. Engineering Training Center, Hefei University of Technology, Hefei 230601, China 3. School of Materials Science and Engineering,Hefei University of Technology, Hefei 230009, China |
| Abstract: | To further understand the hardening mechanism of austenitic manganese steel under actual working conditions, the work hardening ability was studied and the microstructures of austenitic manganese steel were observed under different impact energies. The work hardening mechanism was also analyzed. The results show that the best strain hardening effect could be received only when the impact energy reaches or exceeds the critical impact energy. The microstructural observations reveal that dislocations, stacking faults and twins increase with raising impact energy of the tested specimens. The hardening mechanism changes at different hardening degrees. It is mainly dislocation and slip hardening below the critical impact energy, but it changes to the twinning hardening mechanism when the impact energy is above the critical impact energy. |
| Keywords: | austenitic manganese steel work hardening impact energy microstructure hardening mechanism |
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