氢脆
材料科学
层错能
氢
脆化
合金
延展性(地球科学)
冶金
腐蚀
位错
复合材料
蠕动
化学
有机化学
作者
Doug Young Chung,Young Kyun Kim,Yong Keun Kim,Sang Yoon Song,Heoun Jun Kwon,Seok Su Sohn,Young Sang Na
标识
DOI:10.1016/j.corsci.2023.111023
摘要
Hydrogen embrittlement is a complex phenomenon resulting in severe deterioration of ductility or load-bearing capacity of structural metals due to the presence of hydrogen atoms. In order to discover hydrogen-tolerant metals, in this work, we introduce two novel face-centered-cubic phase medium entropy alloys (MEAs) (Cr12Ni12MnxFe76−x, x = 24 and 16). Interestingly, The Cr12Ni12Mn24Fe52 alloy showed high resistance to hydrogen embrittlement at ambient temperature, while exhibiting an increase in strength and ductility. Through experimental assessment, we demonstrate that the stacking fault energy and the resultant dislocation structures enable our MEA to achieve hydrogen-compatible characteristics.
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