Laboratory X-ray Diffraction Complex for In Situ Investigations of Structural Phase Evolution of Materials under Gaseous Atmosphere
In this work, a laboratory X-ray diffraction complex for in situ investigations of structural phase evolution of materials under gaseous atmosphere and elevated temperatures was developed. The approbation of the complex was carried out using a commercially pure titanium (CP-Ti) powder, zirconium (Zr...
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MDPI AG
2020-03-01
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| Online Access: | https://www.mdpi.com/2075-4701/10/4/447 |
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| author | Maxim Syrtanov Georgiy Garanin Egor Kashkarov Natalia Pushilina Viktor Kudiiarov Tatyana Murashkina |
| author_facet | Maxim Syrtanov Georgiy Garanin Egor Kashkarov Natalia Pushilina Viktor Kudiiarov Tatyana Murashkina |
| author_sort | Maxim Syrtanov |
| collection | DOAJ |
| description | In this work, a laboratory X-ray diffraction complex for in situ investigations of structural phase evolution of materials under gaseous atmosphere and elevated temperatures was developed. The approbation of the complex was carried out using a commercially pure titanium (CP-Ti) powder, zirconium (Zr-1Nb) alloy and electron beam melted Ti-6Al-4V alloy. It was established that hydrogenation of the CP-Ti powder occurred at a temperature of 500 °C and a hydrogen pressure of 0.5 atm, accompanied by the formation of metastable γ titanium hydride (γ-TiH) phase. The lifetime of the γ-TiH phase was 35–40 min. Decomposition of the γ-TiH occurred after reaching a temperature of 650 °C as a result of the thermally stimulated desorption of hydrogen. The α-Zr → δ-ZrH phase transformation was observed under hydrogenation of the zirconium Zr-1Nb alloy at a temperature of 350 °C and a hydrogen pressure of 0.5 atm. It was revealed that the increase in hydrogenation temperature to 450 °C accelerated this transformation by two times. Hydrogenation of the electron beam melted titanium Ti-6Al-4V alloy at a temperature of 650 °C and hydrogen pressure of 0.5 atm was accompanied by the α → α + β → β + α<sub>2</sub> phase transformations. |
| first_indexed | 2024-03-11T10:10:45Z |
| format | Article |
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| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-11T10:10:45Z |
| publishDate | 2020-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-4c5ba21c606641f3b124d65a0de749572023-11-16T14:32:44ZengMDPI AGMetals2075-47012020-03-0110444710.3390/met10040447Laboratory X-ray Diffraction Complex for In Situ Investigations of Structural Phase Evolution of Materials under Gaseous AtmosphereMaxim Syrtanov0Georgiy Garanin1Egor Kashkarov2Natalia Pushilina3Viktor Kudiiarov4Tatyana Murashkina5School of Nuclear Science & Engineering, National Research Tomsk Polytechnic University, 30 Lenin Avenue, 634050 Tomsk, RussiaSchool of Nuclear Science & Engineering, National Research Tomsk Polytechnic University, 30 Lenin Avenue, 634050 Tomsk, RussiaSchool of Nuclear Science & Engineering, National Research Tomsk Polytechnic University, 30 Lenin Avenue, 634050 Tomsk, RussiaSchool of Nuclear Science & Engineering, National Research Tomsk Polytechnic University, 30 Lenin Avenue, 634050 Tomsk, RussiaSchool of Nuclear Science & Engineering, National Research Tomsk Polytechnic University, 30 Lenin Avenue, 634050 Tomsk, RussiaSchool of Nuclear Science & Engineering, National Research Tomsk Polytechnic University, 30 Lenin Avenue, 634050 Tomsk, RussiaIn this work, a laboratory X-ray diffraction complex for in situ investigations of structural phase evolution of materials under gaseous atmosphere and elevated temperatures was developed. The approbation of the complex was carried out using a commercially pure titanium (CP-Ti) powder, zirconium (Zr-1Nb) alloy and electron beam melted Ti-6Al-4V alloy. It was established that hydrogenation of the CP-Ti powder occurred at a temperature of 500 °C and a hydrogen pressure of 0.5 atm, accompanied by the formation of metastable γ titanium hydride (γ-TiH) phase. The lifetime of the γ-TiH phase was 35–40 min. Decomposition of the γ-TiH occurred after reaching a temperature of 650 °C as a result of the thermally stimulated desorption of hydrogen. The α-Zr → δ-ZrH phase transformation was observed under hydrogenation of the zirconium Zr-1Nb alloy at a temperature of 350 °C and a hydrogen pressure of 0.5 atm. It was revealed that the increase in hydrogenation temperature to 450 °C accelerated this transformation by two times. Hydrogenation of the electron beam melted titanium Ti-6Al-4V alloy at a temperature of 650 °C and hydrogen pressure of 0.5 atm was accompanied by the α → α + β → β + α<sub>2</sub> phase transformations.https://www.mdpi.com/2075-4701/10/4/447in situ XRDhydrogenationtitanium alloyszirconium alloyelectron beam meltingthermal expansion coefficient |
| spellingShingle | Maxim Syrtanov Georgiy Garanin Egor Kashkarov Natalia Pushilina Viktor Kudiiarov Tatyana Murashkina Laboratory X-ray Diffraction Complex for In Situ Investigations of Structural Phase Evolution of Materials under Gaseous Atmosphere Metals in situ XRD hydrogenation titanium alloys zirconium alloy electron beam melting thermal expansion coefficient |
| title | Laboratory X-ray Diffraction Complex for In Situ Investigations of Structural Phase Evolution of Materials under Gaseous Atmosphere |
| title_full | Laboratory X-ray Diffraction Complex for In Situ Investigations of Structural Phase Evolution of Materials under Gaseous Atmosphere |
| title_fullStr | Laboratory X-ray Diffraction Complex for In Situ Investigations of Structural Phase Evolution of Materials under Gaseous Atmosphere |
| title_full_unstemmed | Laboratory X-ray Diffraction Complex for In Situ Investigations of Structural Phase Evolution of Materials under Gaseous Atmosphere |
| title_short | Laboratory X-ray Diffraction Complex for In Situ Investigations of Structural Phase Evolution of Materials under Gaseous Atmosphere |
| title_sort | laboratory x ray diffraction complex for in situ investigations of structural phase evolution of materials under gaseous atmosphere |
| topic | in situ XRD hydrogenation titanium alloys zirconium alloy electron beam melting thermal expansion coefficient |
| url | https://www.mdpi.com/2075-4701/10/4/447 |
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