Synthesis of NiAl Intermetallic Compound under Shock-Wave Extrusion
This paper presents the implementation of the first stage of a study on the synthesis of the intermetallic compound in the Ni-Al system under shock-wave extrusion (SWE). A method was developed and experiments involving SWE of the reactive Ni–Al powder mixture were carried out. As a result, it was po...
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MDPI AG
2022-09-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/17/6062 |
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| author | Andrey Malakhov Denis Shakhray Igor Denisov Fanis Galiev Stepan Seropyan |
| author_facet | Andrey Malakhov Denis Shakhray Igor Denisov Fanis Galiev Stepan Seropyan |
| author_sort | Andrey Malakhov |
| collection | DOAJ |
| description | This paper presents the implementation of the first stage of a study on the synthesis of the intermetallic compound in the Ni-Al system under shock-wave extrusion (SWE). A method was developed and experiments involving SWE of the reactive Ni–Al powder mixture were carried out. As a result, it was possible to obtain up to 56 vol.% of the final product and achieve 100% synthesis of NiAl. The results of metallographic analysis indicate that the process of high-velocity collapse of the tube created conditions for the formation of a cumulative flow, which directly affects the phase formation in NiAl. It was shown that the presence of the central hole in the powder sample reduced the effect of the Mach stem on the homogeneity of the NiAl structure. It was also determined that with a central hole with a 5 mm diameter, the effect of the Mach stem could not be observed at all. The goals of further studies are achieving 90–100 vol.% of the final product and reducing the porosity in the final product. Preliminary experimental studies have shown great potential for SWE to produce composite metal–intermetallic materials. |
| first_indexed | 2024-03-10T01:34:38Z |
| format | Article |
| id | doaj.art-79ee9bc234dc48e99aab04b20ebaffdf |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T01:34:38Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-79ee9bc234dc48e99aab04b20ebaffdf2023-11-23T13:34:54ZengMDPI AGMaterials1996-19442022-09-011517606210.3390/ma15176062Synthesis of NiAl Intermetallic Compound under Shock-Wave ExtrusionAndrey Malakhov0Denis Shakhray1Igor Denisov2Fanis Galiev3Stepan Seropyan4Merzhanov Institute of Structural Macrokinetics and Materials Science of Russian Academy of Sciences, 142432 Chernogolovka, RussiaInstitute of Problems of Chemical Physics of Russian Academy of Sciences, 142432 Chernogolovka, RussiaMerzhanov Institute of Structural Macrokinetics and Materials Science of Russian Academy of Sciences, 142432 Chernogolovka, RussiaMerzhanov Institute of Structural Macrokinetics and Materials Science of Russian Academy of Sciences, 142432 Chernogolovka, RussiaMerzhanov Institute of Structural Macrokinetics and Materials Science of Russian Academy of Sciences, 142432 Chernogolovka, RussiaThis paper presents the implementation of the first stage of a study on the synthesis of the intermetallic compound in the Ni-Al system under shock-wave extrusion (SWE). A method was developed and experiments involving SWE of the reactive Ni–Al powder mixture were carried out. As a result, it was possible to obtain up to 56 vol.% of the final product and achieve 100% synthesis of NiAl. The results of metallographic analysis indicate that the process of high-velocity collapse of the tube created conditions for the formation of a cumulative flow, which directly affects the phase formation in NiAl. It was shown that the presence of the central hole in the powder sample reduced the effect of the Mach stem on the homogeneity of the NiAl structure. It was also determined that with a central hole with a 5 mm diameter, the effect of the Mach stem could not be observed at all. The goals of further studies are achieving 90–100 vol.% of the final product and reducing the porosity in the final product. Preliminary experimental studies have shown great potential for SWE to produce composite metal–intermetallic materials.https://www.mdpi.com/1996-1944/15/17/6062exothermic reactionNiAlshock-wave extrusionmicrostructurecumulative flow |
| spellingShingle | Andrey Malakhov Denis Shakhray Igor Denisov Fanis Galiev Stepan Seropyan Synthesis of NiAl Intermetallic Compound under Shock-Wave Extrusion Materials exothermic reaction NiAl shock-wave extrusion microstructure cumulative flow |
| title | Synthesis of NiAl Intermetallic Compound under Shock-Wave Extrusion |
| title_full | Synthesis of NiAl Intermetallic Compound under Shock-Wave Extrusion |
| title_fullStr | Synthesis of NiAl Intermetallic Compound under Shock-Wave Extrusion |
| title_full_unstemmed | Synthesis of NiAl Intermetallic Compound under Shock-Wave Extrusion |
| title_short | Synthesis of NiAl Intermetallic Compound under Shock-Wave Extrusion |
| title_sort | synthesis of nial intermetallic compound under shock wave extrusion |
| topic | exothermic reaction NiAl shock-wave extrusion microstructure cumulative flow |
| url | https://www.mdpi.com/1996-1944/15/17/6062 |
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