期刊
SCRIPTA MATERIALIA
卷 158, 期 -, 页码 57-61出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2018.08.021
关键词
Ion irradiation; Temperature dependent void swelling; High-entropy alloys; Transmission electron microscope (TEM)
类别
资金
- Energy Dissipation to Defect Evolution (EDDE), an Energy Frontier Research Center - U.S. Department of Energy, Office of Science, Basic Energy Sciences
Using ion irradiation and transmission electron microscopy, temperature dependent void swelling and dislocation loop evolution in equiatomic NiCoFeCrMn and NiCoFeCrPd high entropy alloys were investigated. Voids were observed in all tested conditions. An order higher of swelling was observed in both HEM as temperature increased from 420 to 580 degrees C. Alloying with Pd was found to have a stronger suppression effect on void and dislocation loop growth than alloying with Mn. Possible contributions to the swelling resistance were explored, including localized lattice distortion and higher defect migration barrier in NiCoFeCrPd. Additionally, no phase decomposition was observed in either alloy. Published by Elsevier Ltd on behalf of Acta Materialia Inc.
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