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Hydride Formation and Deformation Mechanisms in Commercially Pure Titanium

“…During deformation, the hydrides exhibit a typical high strength but brittle secondary phase behavior, which undertakes more elastic strain than the matrix after the matrix yields and is the location where cracks are first generated. In contrast to first principle calculations [5] and hydride deformation studies in zirconium [6], phase transformation to other hydride phases was not observed during the deformation.…”

“…One of the challenges in studying hydrogen and hydride behavior in CP titanium, and other Ti-based alloys, is the facile formation and dissolution of new hydrides during the preparation of specimens [5]. The difficulty in preparing hydride-free metallographic specimens makes it somewhat ambiguous to discern the underpinning mechanisms of hydride formation and deformation behavior in Ti alloys postmicrostructural manipulation, e.g.…”

Laboratory X-ray Diffraction Complex for In Situ Investigations of Structural Phase Evolution of Materials under Gaseous Atmosphere

“…Along with the formation of δ hydride, the β phase of titanium with a body-centered cubic (bcc) lattice appeared in the diffraction patterns. It is known that hydrogenation of commercially pure titanium can reduce the temperature of α → β polymorphic transformation [32]. Further hydrogenation (25 min) led to an increase in the content of δ and β phases, as well as to the appearance of a metastable phase of γ titanium hydride.…”

“…It is known that the solubility of hydrogen in the α phase is negligible compared to the β phase [40]. Moreover, hydrogen is able to reduce the temperature of the polymorphic α → β transformation, thereby stabilizing the β phase in the alloy [32]. Subsequent hydrogenation up to 30 min leads to a decrease in the intensity of the α phase reflections and an increase in the intensity of the β phase, which indicate an increase in the β phase volume content.…”

Features of Electrochemical (Anode) Synthesis of Nickel and Copper Nanocrystalline Powder

“…Створення дешевого виробництва нанопорошків ніклю (Ni) та міді (Cu) є важливим завданням сучасних технологій, оскільки попередні результати вказують, що такі порошки можуть бути ключем до синтези сучасних розчинних [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26] і нерозчинних вуглецевих наноструктур [27-30], з яких можна створювати сучасні матеріяли [31][32][33][34][35][36]. Іноді такі синтезовані вуглецеві наноструктури здатні зберігати водень [37,38] і конкурувати з наявними матеріялами [39][40][41][42][43][44][45][46][47][48][49][50] для сучасних накопичувачів водню [51,52]. Створені з таких матеріялів вироби є технологічними шедеврами сьогодення [53][54][55].…”