Laboratory x-ray diffraction complex for in situ investigations of structural phase evolution of materials under gaseous atmosphere

Результат исследований: Материалы для журналаСтатья

2 Цитирования (Scopus)

Аннотация

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 500C 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 650C 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 350C and a hydrogen pressure of 0.5 atm. It was revealed that the increase in hydrogenation temperature to 450C accelerated this transformation by two times. Hydrogenation of the electron beam melted titanium Ti-6Al-4V alloy at a temperature of 650C and hydrogen pressure of 0.5 atm was accompanied by the α → α + β → β + α2 phase transformations.

Язык оригиналаАнглийский
Номер статьи447
ЖурналMetals
Том10
Номер выпуска4
DOI
СостояниеОпубликовано - апр 2020

ASJC Scopus subject areas

  • Materials Science(all)

Fingerprint Подробные сведения о темах исследования «Laboratory x-ray diffraction complex for in situ investigations of structural phase evolution of materials under gaseous atmosphere». Вместе они формируют уникальный семантический отпечаток (fingerprint).

  • Цитировать