Laboratory X-ray Diffraction Complex for In Situ Investigations of Structural Phase Evolution of Materials under Gaseous Atmosphere
| Parent link: | Metals Vol. 10, iss. 4.— 2020.— [447, 15 p.] |
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| Autor Corporativo: | |
| Outros Autores: | , , , , , |
| Resumo: | Title screen 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 ? titanium hydride (?-TiH) phase. The lifetime of the ?-TiH phase was 35–40 min. Decomposition of the ?-TiH occurred after reaching a temperature of 650 °C as a result of the thermally stimulated desorption of hydrogen. The a-Zr ? d-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 a ? a + Я ? Я + a2 phase transformations. |
| Idioma: | inglês |
| Publicado em: |
2020
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| Assuntos: | |
| Acesso em linha: | http://earchive.tpu.ru/handle/11683/64876 https://doi.org/10.3390/met10040447 |
| Formato: | Recurso Electrónico Capítulo de Livro |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=662171 |