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Название: Grain shape and size and structural and phase conditions modified by aluminum ion implantation in UFG titanium
Авторы: Nikonenko, Alisa
Popova, Natalya
Nikonenko, Elena Leonidovna
Kalashnikov, Mark Petrovich
Kurzina, Irina
Ключевые слова: формы; размеры; зерна; структурно-фазовые состояния; ионная имплантация; алюминий; титан; просвечивающая электронная микроскопия; анизотропия
Дата публикации: 2016
Издатель: AIP Publishing
Библиографическое описание: Grain shape and size and structural and phase conditions modified by aluminum ion implantation in UFG titanium / A. Nikonenko [et al.] // AIP Conference Proceedings. — 2016. — Vol. 1772 : Prospects of Fundamental Sciences Development (PFSD-2016) : XIII International Conference of Students and Young Scientists, 26–29 April 2016, Tomsk, Russia : [proceedings]. — [030007, 7 p.].
Аннотация: The paper presents the transmission electron microscopy investigations of the granular state and the structural and phase conditions of commercially pure ultra-fine grain (UFG) titanium VT1-0 alloyed with aluminum ions. The UFG-titanium is obtained by the multiple uniaxial compaction with intermediate annealing. The ion implantation is carried out on Mevva-V.Ru ion source at ion-implantation dosages of 1·10{17}, 5·10{17} and 1·10{18} ion/cm{2}. The functions are constructed for the grain size distribution in longitudinal and cross sections; the average grain size and the grain anisotropy factor are determined in this paper. It is shown that the grain shape and size of titanium specimens are modified due to the ion implantation. With the increase of the ion-implantation dosage the anisotropy factor decreases three times. At 1·10{18} ion/cm{2} ion-implantation dosage the longitudinal grain size comes to 0.7 [mu]m. The phase composition of the alloy is detected after the ion implantation and its modification induced by the implantation dosage. The quantitative characteristics and locations of secondary [beta]-Ti, TiAl[3], Ti[3] Al, TiC and TiO[2] phases are ascertained during the investigations. It is shown that TiAl[3] and Ti[3] Al are ordered phases formed during the ion implantation on [alpha]-Ti grain boundaries. The volume ratios of these phases are detected and determined by the ion-implantation dosage. The volume ratios of [alpha]-Ti and secondary TiC and TiO[2] phases do not depend on the implantation dosage and range between 0.3-0.9 vol.%.
URI: http://earchive.tpu.ru/handle/11683/34993
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