Observation of the Hydrogen-Dislocation Interactions in a High-Manganese Steel after Hydrogen Adsorption and Desorption
作者机构：Department of Plasticity TechnologySchool of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai200030China State Key Laboratory of Solidification ProcessingNorthwestern Polytechnical UniversityXi’an710072China
出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)
年 卷 期：2023年第36卷第7期
页 面：1105-1112页
核心收录：
学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学]
基 金：This work was financially supported by the National Natural Science Foundation of China(No.52101022) the Shaanxi Province Natural Science Foundation(No.2021JQ-080)
主 题：Hydrogen embrittlement Stacking fault Dislocation movement High-manganese steel Electron channeling contrast imaging(ECCI)
摘 要：Hydrogen embrittlement(HE)poses a significant challenge for the development of high-strength metallic ***,explanations for the observed HE phenomena are still under *** shed light on this issue,here we investigated the hydrogen-defect interaction by comparing the dislocation structure evolution after hydrogen adsorption and desorption in a Fe-28Mn-0.3C(wt%)twinning-induced plasticity steel with an austenitic structure using in situ electron channeling contrast *** results indicate that hydrogen can strongly affect dislocation *** detail,hydrogen can promote the formation of stacking faults with a long dissociation ***,dislocation movements are frequently observed during hydrogen *** required resolved shear stress is considered to be the residual stresses rendered by hydrogen ***,the microstructural heterogeneity could lead to the discrepancy of dislocation activities even within the same materials.
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