Structure and Properties of Heat-Resistant Alloys NiAl–Cr–Co–<i>X</i> (<i>X =</i> La, Mo, Zr, Ta, Re) and Fabrication of Powders for Additive Manufacturing
The NiAl–Cr–Co–<i>X</i> alloys were produced by centrifugal self-propagating high-temperature synthesis (SHS) casting. The effects of dopants <i>X</i> = La, Mo, Zr, Ta, and Re on combustion, as well as the phase composition, structure, and properties of the resulting cast all...
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| author | Vitaliy V. Sanin Yury Yu. Kaplansky Maksym I. Aheiev Evgeny A. Levashov Mikhail I. Petrzhik Marina Ya. Bychkova Andrey V. Samokhin Andrey A. Fadeev Vladimir N. Sanin |
| author_facet | Vitaliy V. Sanin Yury Yu. Kaplansky Maksym I. Aheiev Evgeny A. Levashov Mikhail I. Petrzhik Marina Ya. Bychkova Andrey V. Samokhin Andrey A. Fadeev Vladimir N. Sanin |
| author_sort | Vitaliy V. Sanin |
| collection | DOAJ |
| description | The NiAl–Cr–Co–<i>X</i> alloys were produced by centrifugal self-propagating high-temperature synthesis (SHS) casting. The effects of dopants <i>X</i> = La, Mo, Zr, Ta, and Re on combustion, as well as the phase composition, structure, and properties of the resulting cast alloys, have been studied. The greatest improvement in overall properties was achieved when the alloys were co-doped with 15% Mo and 1.5% Re. By forming a ductile matrix, molybdenum enhanced strength characteristics up to the values σ<sub>ucs</sub> = 1604 ± 80 MPa, σ<sub>ys</sub> = 1520 ± 80 MPa, and ε<sub>pd</sub> = 0.79%, while annealing at T = 1250 ℃ and t = 180 min improved strength characteristics to the following level: σ<sub>ucs</sub> = 1800 ± 80 MPa, σ<sub>ys</sub> = 1670 ± 80 MPa, and ε<sub>pd</sub> = 1.58%. Rhenium modified the structure of the alloy and further improved its properties. The mechanical properties of the NiAl, ZrNi<sub>5</sub>, Ni<sub>0.92</sub>Ta<sub>0.08</sub>, (Al,Ta)Ni<sub>3</sub>, and Al(Re,Ni)<sub>3</sub> phases were determined by nanoindentation. The three-level hierarchical structure of the NiAl–Cr–Co+15%Mo alloy was identified. The optimal plasma treatment regime was identified, and narrow-fraction powders (fraction 8–27 µm) characterized by 95% degree of spheroidization and the content of nanosized fraction <5% were obtained. |
| first_indexed | 2024-03-10T10:37:37Z |
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| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T10:37:37Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
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| series | Materials |
| spelling | doaj.art-f7482df52dcb4f028248dd5927943a872023-11-21T23:12:53ZengMDPI AGMaterials1996-19442021-06-011412314410.3390/ma14123144Structure and Properties of Heat-Resistant Alloys NiAl–Cr–Co–<i>X</i> (<i>X =</i> La, Mo, Zr, Ta, Re) and Fabrication of Powders for Additive ManufacturingVitaliy V. Sanin0Yury Yu. Kaplansky1Maksym I. Aheiev2Evgeny A. Levashov3Mikhail I. Petrzhik4Marina Ya. Bychkova5Andrey V. Samokhin6Andrey A. Fadeev7Vladimir N. Sanin8Scientific-Educational Center of SHS, National University of Science and Technology “MISiS”, Leninsky Prospect 4, 119049 Moscow, RussiaScientific-Educational Center of SHS, National University of Science and Technology “MISiS”, Leninsky Prospect 4, 119049 Moscow, RussiaScientific-Educational Center of SHS, National University of Science and Technology “MISiS”, Leninsky Prospect 4, 119049 Moscow, RussiaScientific-Educational Center of SHS, National University of Science and Technology “MISiS”, Leninsky Prospect 4, 119049 Moscow, RussiaScientific-Educational Center of SHS, National University of Science and Technology “MISiS”, Leninsky Prospect 4, 119049 Moscow, RussiaScientific-Educational Center of SHS, National University of Science and Technology “MISiS”, Leninsky Prospect 4, 119049 Moscow, RussiaA.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninsky Prospect 49, 119334 Moscow, RussiaScientific-Educational Center of SHS, National University of Science and Technology “MISiS”, Leninsky Prospect 4, 119049 Moscow, RussiaA.G. Merzhanov Institute of Sructural Macrokinetics and Materials Science, Russian Academy of Science, Acad. Osipyan Str. 8, Chernogolovka, 142432 Moscow, RussiaThe NiAl–Cr–Co–<i>X</i> alloys were produced by centrifugal self-propagating high-temperature synthesis (SHS) casting. The effects of dopants <i>X</i> = La, Mo, Zr, Ta, and Re on combustion, as well as the phase composition, structure, and properties of the resulting cast alloys, have been studied. The greatest improvement in overall properties was achieved when the alloys were co-doped with 15% Mo and 1.5% Re. By forming a ductile matrix, molybdenum enhanced strength characteristics up to the values σ<sub>ucs</sub> = 1604 ± 80 MPa, σ<sub>ys</sub> = 1520 ± 80 MPa, and ε<sub>pd</sub> = 0.79%, while annealing at T = 1250 ℃ and t = 180 min improved strength characteristics to the following level: σ<sub>ucs</sub> = 1800 ± 80 MPa, σ<sub>ys</sub> = 1670 ± 80 MPa, and ε<sub>pd</sub> = 1.58%. Rhenium modified the structure of the alloy and further improved its properties. The mechanical properties of the NiAl, ZrNi<sub>5</sub>, Ni<sub>0.92</sub>Ta<sub>0.08</sub>, (Al,Ta)Ni<sub>3</sub>, and Al(Re,Ni)<sub>3</sub> phases were determined by nanoindentation. The three-level hierarchical structure of the NiAl–Cr–Co+15%Mo alloy was identified. The optimal plasma treatment regime was identified, and narrow-fraction powders (fraction 8–27 µm) characterized by 95% degree of spheroidization and the content of nanosized fraction <5% were obtained.https://www.mdpi.com/1996-1944/14/12/3144heat-resistant alloysNiAlcentrifugal SHS castinghierarchical structureplasma spheroidization |
| spellingShingle | Vitaliy V. Sanin Yury Yu. Kaplansky Maksym I. Aheiev Evgeny A. Levashov Mikhail I. Petrzhik Marina Ya. Bychkova Andrey V. Samokhin Andrey A. Fadeev Vladimir N. Sanin Structure and Properties of Heat-Resistant Alloys NiAl–Cr–Co–<i>X</i> (<i>X =</i> La, Mo, Zr, Ta, Re) and Fabrication of Powders for Additive Manufacturing Materials heat-resistant alloys NiAl centrifugal SHS casting hierarchical structure plasma spheroidization |
| title | Structure and Properties of Heat-Resistant Alloys NiAl–Cr–Co–<i>X</i> (<i>X =</i> La, Mo, Zr, Ta, Re) and Fabrication of Powders for Additive Manufacturing |
| title_full | Structure and Properties of Heat-Resistant Alloys NiAl–Cr–Co–<i>X</i> (<i>X =</i> La, Mo, Zr, Ta, Re) and Fabrication of Powders for Additive Manufacturing |
| title_fullStr | Structure and Properties of Heat-Resistant Alloys NiAl–Cr–Co–<i>X</i> (<i>X =</i> La, Mo, Zr, Ta, Re) and Fabrication of Powders for Additive Manufacturing |
| title_full_unstemmed | Structure and Properties of Heat-Resistant Alloys NiAl–Cr–Co–<i>X</i> (<i>X =</i> La, Mo, Zr, Ta, Re) and Fabrication of Powders for Additive Manufacturing |
| title_short | Structure and Properties of Heat-Resistant Alloys NiAl–Cr–Co–<i>X</i> (<i>X =</i> La, Mo, Zr, Ta, Re) and Fabrication of Powders for Additive Manufacturing |
| title_sort | structure and properties of heat resistant alloys nial cr co i x i i x i la mo zr ta re and fabrication of powders for additive manufacturing |
| topic | heat-resistant alloys NiAl centrifugal SHS casting hierarchical structure plasma spheroidization |
| url | https://www.mdpi.com/1996-1944/14/12/3144 |
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