Temperature-Dependent Mechanical Properties of CoCrFeNi Medium-Entropy Alloy Produced by Laser-Directed Energy Deposition
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| Publicat a: | Metals vol. 15, no. 1 (2025), p. 9 |
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| Autor principal: | |
| Altres autors: | , , , , , , , |
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MDPI AG
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| Accés en línia: | Citation/Abstract Full Text + Graphics Full Text - PDF |
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| 022 | |a 2075-4701 | ||
| 024 | 7 | |a 10.3390/met15010009 |2 doi | |
| 035 | |a 3159551238 | ||
| 045 | 2 | |b d20250101 |b d20251231 | |
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| 100 | 1 | |a Klimova, Margarita |u World-Class Research Center, “Advanced Digital Technologies”, Saint Petersburg State Marine Technical University, 190121 Saint Petersburg, Russia; <email>krasanov@ilwt.smtu.ru</email> (I.K.); <email>astakhov@bsu.edu.ru</email> (I.A.); <email>kovalenko.ek@inbox.ru</email> (E.K.); <email>kochura@ilwt.smtu.ru</email> (E.K.); <email>semenyuk@bsu.edu.ru</email> (A.S.); <email>zherebtsov@bsu.edu.ru</email> (S.Z.); <email>o.klimova@corp.smtu.ru</email> (O.K.-K.); <email>stepanov@bsu.edu.ru</email> (N.S.); Laboratory of Bulk Nanostructured Materials, Belgorod State University, 308015 Belgorod, Russia | |
| 245 | 1 | |a Temperature-Dependent Mechanical Properties of CoCrFeNi Medium-Entropy Alloy Produced by Laser-Directed Energy Deposition | |
| 260 | |b MDPI AG |c 2025 | ||
| 513 | |a Journal Article | ||
| 520 | 3 | |a The temperature dependence of the mechanical properties of the CoCrFeNi medium-entropy alloy (MEA) manufactured by laser-directed energy deposition (L-DED) and additionally annealed at 1200 °C for 24 h was studied. The microstructure of the as-deposited alloy was represented by a single-phase face-centered cubic structure with coarse columnar grains and a high density of dislocation. Annealing resulted in the development of recrystallization and a reduction in dislocation density. The CoCrFeNi alloy produced by L-DED demonstrated mechanical properties comparable with those of the fine-grained equiatomic CoCrFeMnNi alloy, produced by casting followed by thermomechanical processing. Namely, as-deposited CoCrFeNi had a yield strength (YS) and ultimate tensile strength (UTS) of YS = 370 MPa and UTS = 610 MPa at room temperature, and YS = 565 MPa and UTS = 965 MPa at cryogenic temperature, along with a ductility of ~60%. Annealing resulted in a decrease in strength to YS = 180/350 MPa at 293/77 K. A quantitative analysis of various strengthening mechanisms showed that some strength increment of the as-deposited alloy was ensured by the high dislocation density formed during L-DED. | |
| 651 | 4 | |a United States--US | |
| 651 | 4 | |a Japan | |
| 653 | |a Mechanical properties | ||
| 653 | |a Medium entropy alloys | ||
| 653 | |a Columnar structure | ||
| 653 | |a Investigations | ||
| 653 | |a Deposition | ||
| 653 | |a Grain boundaries | ||
| 653 | |a Thermomechanical treatment | ||
| 653 | |a Room temperature | ||
| 653 | |a Recrystallization | ||
| 653 | |a Dislocation density | ||
| 653 | |a Scientific imaging | ||
| 653 | |a Energy | ||
| 653 | |a Grain size | ||
| 653 | |a Microstructure | ||
| 653 | |a Entropy | ||
| 653 | |a Annealing | ||
| 653 | |a Solid solutions | ||
| 653 | |a Temperature dependence | ||
| 653 | |a Grain growth | ||
| 653 | |a Ultimate tensile strength | ||
| 653 | |a Cryogenic temperature | ||
| 653 | |a Lasers | ||
| 653 | |a Thermomechanical properties | ||
| 653 | |a Temperature | ||
| 653 | |a Ductility | ||
| 653 | |a Deformation | ||
| 653 | |a Alloys | ||
| 653 | |a Yield strength | ||
| 700 | 1 | |a Krasanov, Igor |u World-Class Research Center, “Advanced Digital Technologies”, Saint Petersburg State Marine Technical University, 190121 Saint Petersburg, Russia; <email>krasanov@ilwt.smtu.ru</email> (I.K.); <email>astakhov@bsu.edu.ru</email> (I.A.); <email>kovalenko.ek@inbox.ru</email> (E.K.); <email>kochura@ilwt.smtu.ru</email> (E.K.); <email>semenyuk@bsu.edu.ru</email> (A.S.); <email>zherebtsov@bsu.edu.ru</email> (S.Z.); <email>o.klimova@corp.smtu.ru</email> (O.K.-K.); <email>stepanov@bsu.edu.ru</email> (N.S.) | |
| 700 | 1 | |a Astakhov, Ilya |u World-Class Research Center, “Advanced Digital Technologies”, Saint Petersburg State Marine Technical University, 190121 Saint Petersburg, Russia; <email>krasanov@ilwt.smtu.ru</email> (I.K.); <email>astakhov@bsu.edu.ru</email> (I.A.); <email>kovalenko.ek@inbox.ru</email> (E.K.); <email>kochura@ilwt.smtu.ru</email> (E.K.); <email>semenyuk@bsu.edu.ru</email> (A.S.); <email>zherebtsov@bsu.edu.ru</email> (S.Z.); <email>o.klimova@corp.smtu.ru</email> (O.K.-K.); <email>stepanov@bsu.edu.ru</email> (N.S.); Laboratory of Bulk Nanostructured Materials, Belgorod State University, 308015 Belgorod, Russia | |
| 700 | 1 | |a Kovalenko, Ekaterina |u World-Class Research Center, “Advanced Digital Technologies”, Saint Petersburg State Marine Technical University, 190121 Saint Petersburg, Russia; <email>krasanov@ilwt.smtu.ru</email> (I.K.); <email>astakhov@bsu.edu.ru</email> (I.A.); <email>kovalenko.ek@inbox.ru</email> (E.K.); <email>kochura@ilwt.smtu.ru</email> (E.K.); <email>semenyuk@bsu.edu.ru</email> (A.S.); <email>zherebtsov@bsu.edu.ru</email> (S.Z.); <email>o.klimova@corp.smtu.ru</email> (O.K.-K.); <email>stepanov@bsu.edu.ru</email> (N.S.) | |
| 700 | 1 | |a Kochura, Elizaveta |u World-Class Research Center, “Advanced Digital Technologies”, Saint Petersburg State Marine Technical University, 190121 Saint Petersburg, Russia; <email>krasanov@ilwt.smtu.ru</email> (I.K.); <email>astakhov@bsu.edu.ru</email> (I.A.); <email>kovalenko.ek@inbox.ru</email> (E.K.); <email>kochura@ilwt.smtu.ru</email> (E.K.); <email>semenyuk@bsu.edu.ru</email> (A.S.); <email>zherebtsov@bsu.edu.ru</email> (S.Z.); <email>o.klimova@corp.smtu.ru</email> (O.K.-K.); <email>stepanov@bsu.edu.ru</email> (N.S.) | |
| 700 | 1 | |a Semenyuk, Anastasia |u World-Class Research Center, “Advanced Digital Technologies”, Saint Petersburg State Marine Technical University, 190121 Saint Petersburg, Russia; <email>krasanov@ilwt.smtu.ru</email> (I.K.); <email>astakhov@bsu.edu.ru</email> (I.A.); <email>kovalenko.ek@inbox.ru</email> (E.K.); <email>kochura@ilwt.smtu.ru</email> (E.K.); <email>semenyuk@bsu.edu.ru</email> (A.S.); <email>zherebtsov@bsu.edu.ru</email> (S.Z.); <email>o.klimova@corp.smtu.ru</email> (O.K.-K.); <email>stepanov@bsu.edu.ru</email> (N.S.); Laboratory of Bulk Nanostructured Materials, Belgorod State University, 308015 Belgorod, Russia | |
| 700 | 1 | |a Zherebtsov, Sergey |u World-Class Research Center, “Advanced Digital Technologies”, Saint Petersburg State Marine Technical University, 190121 Saint Petersburg, Russia; <email>krasanov@ilwt.smtu.ru</email> (I.K.); <email>astakhov@bsu.edu.ru</email> (I.A.); <email>kovalenko.ek@inbox.ru</email> (E.K.); <email>kochura@ilwt.smtu.ru</email> (E.K.); <email>semenyuk@bsu.edu.ru</email> (A.S.); <email>zherebtsov@bsu.edu.ru</email> (S.Z.); <email>o.klimova@corp.smtu.ru</email> (O.K.-K.); <email>stepanov@bsu.edu.ru</email> (N.S.); Laboratory of Bulk Nanostructured Materials, Belgorod State University, 308015 Belgorod, Russia | |
| 700 | 1 | |a Klimova-Korsmik, Olga |u World-Class Research Center, “Advanced Digital Technologies”, Saint Petersburg State Marine Technical University, 190121 Saint Petersburg, Russia; <email>krasanov@ilwt.smtu.ru</email> (I.K.); <email>astakhov@bsu.edu.ru</email> (I.A.); <email>kovalenko.ek@inbox.ru</email> (E.K.); <email>kochura@ilwt.smtu.ru</email> (E.K.); <email>semenyuk@bsu.edu.ru</email> (A.S.); <email>zherebtsov@bsu.edu.ru</email> (S.Z.); <email>o.klimova@corp.smtu.ru</email> (O.K.-K.); <email>stepanov@bsu.edu.ru</email> (N.S.) | |
| 700 | 1 | |a Stepanov, Nikita |u World-Class Research Center, “Advanced Digital Technologies”, Saint Petersburg State Marine Technical University, 190121 Saint Petersburg, Russia; <email>krasanov@ilwt.smtu.ru</email> (I.K.); <email>astakhov@bsu.edu.ru</email> (I.A.); <email>kovalenko.ek@inbox.ru</email> (E.K.); <email>kochura@ilwt.smtu.ru</email> (E.K.); <email>semenyuk@bsu.edu.ru</email> (A.S.); <email>zherebtsov@bsu.edu.ru</email> (S.Z.); <email>o.klimova@corp.smtu.ru</email> (O.K.-K.); <email>stepanov@bsu.edu.ru</email> (N.S.); Laboratory of Bulk Nanostructured Materials, Belgorod State University, 308015 Belgorod, Russia | |
| 773 | 0 | |t Metals |g vol. 15, no. 1 (2025), p. 9 | |
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