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Strengthening of ultrafine-grained equiatomic CoCrFeMnNi high-entropy alloy by nitrogen addition
- Authors
- Jodi, Dennis Edgard; Park, Joohyun; Park, Nokeun
- Issue Date
- Jan-2020
- Publisher
- Elsevier BV
- Keywords
- Metals and alloys; High-entropy alloys; Nitrogen; Precipitate; Microstructure; Mechanical properties
- Citation
- Materials Letters, v.258, pp 1 - 4
- Pages
- 4
- Indexed
- SCIE
SCOPUS
- Journal Title
- Materials Letters
- Volume
- 258
- Start Page
- 1
- End Page
- 4
- ISSN
- 0167-577X
1873-4979
- Abstract
- A design of precipitate-containing, ultrafine-grained equiatomic CoCrFeMnNi high-entropy alloy with the addition of nitrogen was introduced. The introduction of nitrogen led to the formation of Cr- and N-rich precipitate of Cr2N on the low temperature-annealed N-CoCrFeMnNi. It was noticed that the presence of nitrogen in N-CoCrFeMnNi suppressed the formation of r-phase precipitate generally observed in low temperature-annealed CoCrFeMnNi system. Furthermore, it was observed that the addition of nitrogen could be utilized as a viable method in enhancing the mechanical properties of ultrafine-grained CoCrFeMnNi matrix, in which the addition of nitrogen successfully led to an improved yield strength and ultimate tensile strength of the ultrafine-grained CoCrFeMnNi system. (C) 2019 Elsevier B.V. All rights reserved.
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Related Researcher
- Park, Joo Hyun
- ERICA 첨단융합대학 (ERICA 신소재·반도체공학전공)