Hydrogen-induced failure of TiNi based alloy with coarse-grained and ultrafine-grained structure

Hydrogen-induced failure of TiNi based alloy with coarse-grained and ultrafine-grained structure

Bibliographic Details
Parent link:Procedia Structural Integrity
Vol. 2: 21st European Conference on Fracture: ECF21, 20-24 June 2016, Catania, Italy.— 2016.— [P. 1481-1488]
Corporate Author: Национальный исследовательский Томский политехнический университет (ТПУ) Физико-технический институт (ФТИ) Кафедра общей физики (ОФ)
Other Authors: Baturin A. A. Anatoly Anatolievich, Lotkov A. I. Aleksandr Ivanovich, Grishkov V. N. Viktor Nikolaevich, Rodionov I. S. Ivan Sergeevich, Krukovsky K. V. Konstantin Vitaljevich
Summary:Title screen
The objective of this work is to investigate the effect of hydrogen-induced fracture of TiNi-based alloy. In this report we performed the first studies comparing inelastic properties and fracture of the specimens of the binary alloy of TiNi wire under the action of hydrogen with coarse-grained (CG) and ultrafine-grained (UFG) microstructure. It is shown that hydrogen embrittlement (HE) occurs irrespective of the grain size in the studied specimens at approximately equal strain values. However, compared to the specimens with CG structure, those with UFG structure accumulate two to three times more hydrogen for the same hydrogenation time. It is found that hydrogen has a much smaller effect on the inelastic properties of specimens with UFG structure as compared to those with CG structure.
Режим доступа: по договору с организацией-держателем ресурса
Published: 2016
Subjects:
электронный ресурс
труды учёных ТПУ
сплавы
крупнозернистые структуры
ультрамелкозернистые структуры
водородная хрупкость
NiTi wire
fracture
hydrogen embrittlement
ultrafine grain
Online Access:https://doi.org/10.1016/j.prostr.2016.06.188
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=655347
Description
Summary:Title screen
The objective of this work is to investigate the effect of hydrogen-induced fracture of TiNi-based alloy. In this report we performed the first studies comparing inelastic properties and fracture of the specimens of the binary alloy of TiNi wire under the action of hydrogen with coarse-grained (CG) and ultrafine-grained (UFG) microstructure. It is shown that hydrogen embrittlement (HE) occurs irrespective of the grain size in the studied specimens at approximately equal strain values. However, compared to the specimens with CG structure, those with UFG structure accumulate two to three times more hydrogen for the same hydrogenation time. It is found that hydrogen has a much smaller effect on the inelastic properties of specimens with UFG structure as compared to those with CG structure.
Режим доступа: по договору с организацией-держателем ресурса
DOI:10.1016/j.prostr.2016.06.188

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