Strength of hydrogen-free and hydrogen-doped Ni50Ti50 shape memory platelets

Weiser, Adam; Buršíková, V.; Jarý, Milan; Dymáček, Petr; Dugáček, J.; Frenzel, J.; Čermák, Jiří; Dlouhý, Antonín

doi:https://dx.doi.org/10.1016/j.scriptamat.2018.10.044

Number of the records: 1

Strength of hydrogen-free and hydrogen-doped Ni50Ti50 shape memory platelets

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SYSNO ASEP	0507588
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Strength of hydrogen-free and hydrogen-doped Ni50Ti50 shape memory platelets
Author(s)	Weiser, Adam (UFM-A)_ORCID Buršíková, V. (CZ) Jarý, Milan (UFM-A) Dymáček, Petr (UFM-A)_{RID, ORCID} Dugáček, J. (CZ) Frenzel, J. (DE) Čermák, Jiří (UFM-A)_{RID, ORCID} Dlouhý, Antonín (UFM-A)_{RID, ORCID}
Number of authors	8
Source Title	Scripta Materialia. - : Elsevier - ISSN 1359-6462 Roč. 162, MAR (2019), s. 151-155
Number of pages	5 s.
Language	eng - English
Country	US - United States
Keywords	Shape memory alloy ; Hydrogen charging ; Small-punch test ; Nano-indentation ; Transmission electron microscopy
Subject RIV	JG - Metallurgy
OECD category	Materials engineering
R&D Projects	GA15-16336S GA ČR - Czech Science Foundation (CSF)
	LQ1601 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
	LM2015069 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Method of publishing	Limited access
Institutional support	UFM-A - RVO:68081723
UT WOS	000457664900033
EID SCOPUS	85056453680
DOI	10.1016/j.scriptamat.2018.10.044
Annotation	Small-punch and nano-indentation tests were used for the first time to probe strength of 500 μm thin Ni50Ti50 shape memory platelets in their hydrogen-free and hydrogen-doped states. Results show excellent reproducibility and suggest that hydrogen penetrates the alloy more efficiently during the cathodic charging at ambient temperatures as compared to heat treatments in a controlled hydrogen atmosphere. Hydrogen content exceeding 100 wtppm results in a retransformation from the B19′ martensite to the R lattice and causes a systematic drop of the rupture strength. The retransformation events in thin surface lamellae were documented by the transmission electron microscopy.
Workplace	Institute of Physics of Materials
Contact	Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485
Year of Publishing	2020
Electronic address	https://www.sciencedirect.com/science/article/pii/S1359646218306730?via%3Dihub

Number of the records: 1