期刊
SCRIPTA MATERIALIA
卷 178, 期 -, 页码 508-512出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2019.11.042
关键词
Large strain machining (LSM); Severe plastic deformation; High entropy alloys
类别
资金
- U.S. Department of Energy, Office of Nuclear Energy Fuel Cycle Research and Development Program
- Los Alamos National Laboratory (LANL)/Laboratory Directed Research & Development (LDRD) Program
- U.S. DOE [89233218CNA000001]
- DOE-NEUP program [18-14912]
Large strain machining (LSM), an attractive severe deformation technique due to its simplicity, has been previously used to produce a fine-grained structure in a variety of alloys. An equiatomic CrFeMnNi high entropy alloy was subject to various LSM conditions. The microstructure was observed to have ultra-fine grains in all conditions, with some more homogeneous than others. Nanoindentation showed a considerable increase in hardness for all LSM conditions with respect to the base material. Mesoscale tensile testing revealed that, while the tensile strength of the LSM specimens was higher than that of the base material, the ductility was reduced significantly. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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