Hydrogen effect on compression mechanical properties of TiNb alloys at elevated temperatures

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F17%3A10238758" target="_blank" >RIV/61989100:27360/17:10238758 - isvavai.cz</a>

Result on the web

<a href="http://iopscience.iop.org/article/10.1088/1757-899X/179/1/012048/pdf" target="_blank" >http://iopscience.iop.org/article/10.1088/1757-899X/179/1/012048/pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1757-899X/179/1/012048" target="_blank" >10.1088/1757-899X/179/1/012048</a>

Result language

angličtina

Original language name

Hydrogen effect on compression mechanical properties of TiNb alloys at elevated temperatures

Original language description

The study of this work was focused on the hydrogen effect on hot deformation behavior of hydrogen charged TiNb based alloys at three temperatures in comparison with non-charged specimens. The Ti24Nb and Ti26Nb (at.%) alloys were heat treated by three step regime in argon or hydrogen atmospheres. The hot compression tests were performed on a Gleeble 3800 machine at 800, 750 and 700 degrees C with compression strain of 5x10(-3) s(-1) and deformation degree of 50 %. The microstructure resulting from heat treatment as well as from isothermal compression test was analyzed using optical and scanning electron microscopies. Measurement of microhardness revealed that higher microhardness values for Ti24Nb after thermo-hydrogen treatment corresponded to fine grained microstructure and strengthening by grain boundaries. Hydrogen contents determined using LECO RH600 analyzer showed that Ti26Nb contained higher amount of hydrogen due to the stabilization of beta phase by higher Nb concentration. Based on the hot compression test results, the plasticity at elevated temperatures was evaluated. The evolution of uniaxial compressive test curves showed the stabilization of flow stress due to the hydrogen for high deformations at lower temperatures. The differences in hot compression behavior for both niobium contents on the one hand and for hydrogen charged and non-charged specimens on the other hand were observed.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20501 - Materials engineering

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

IOP Conference Series: Materials Science and Engineering. Volume 179

ISBN

—

ISSN

1757-8981

e-ISSN

neuvedeno

Number of pages

6

Pages from-to

1-6

Publisher name

Institute of Physics

Place of publication

London

Event location

Plzeň

Event date

Nov 9, 2016

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000403407100048