Abstract
We investigated the strain rate dependency of the hydrogen-induced mechanical degradation of Fe-33Mn-1.1C steel at 303 K within the strain rate range of 10−2 to 10−5 s−1. In the presence of hydrogen, lowering the strain rate monotonically decreased the work hardening rate, elongation, and tensile strength and increased the yield strength. Lowering the strain rate simultaneously enhanced the plasticity-related effects of hydrogen and carbon, leading to the observed degradation of the ductility.
Notes
All chemical contents are provided in weight percentage, unless otherwise noted.
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This work was financially supported by the Japan Science and Technology Agency (JST) (Grant No.: 20100113) under Industry-Academia Collaborative R&D Program “Heterogeneous Structure Control: Towards Innovative Development of Metallic Structural Materials” and JSPS KAKENHI (JP16H06365 and JP17H04956). B. Bal acknowledges the financial support by the AGU-BAP under Grant Number: FAB-2017-77.
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Tuğluca, I.B., Koyama, M., Shimomura, Y. et al. Lowering Strain Rate Simultaneously Enhances Carbon- and Hydrogen-Induced Mechanical Degradation in an Fe-33Mn-1.1C Steel. Metall Mater Trans A 50, 1137–1141 (2019). https://doi.org/10.1007/s11661-018-5080-7
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DOI: https://doi.org/10.1007/s11661-018-5080-7