Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 846, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2022.143307
Keywords
High-entropy alloy; Boron nitride; Precipitation; Mechanical properties
Categories
Funding
- Creative Materials Discovery Program through the National Research Foundation of Korea (NRF) - Ministry of Science and ICT [2016M3D1A1023384]
- Korea government (MSIP) [NRF-2021R1A2C3006662]
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This work investigates the multiple strengthening mechanisms in the B-N co-doped CoCrFeMnNi high-entropy alloy. It is found that B-N co-doping leads to the formation of fine grain size and Cr2B and BN precipitates. The B-N co-doped alloy exhibits enhanced yield strength by 95% while maintaining considerable ductility, which is attributed to the combined effects of solid solution strengthening, precipitation strengthening, and grain boundary strengthening.
This work aims to investigate the multiple strengthening mechanisms in the B-N co-doped CoCrFeMnNi high-entropy alloy. B-N co-doping induces the fine grain size and leads to Cr2B and BN precipitate formations. The B-N co-doped CoCrFeMnNi high-entropy alloy exhibits enhanced yield strength by-95% with sustaining the considerable ductility of-49.8%, resulting from solid solution strengthening, precipitation strengthening, and grain boundary strengthening.
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