Structural characteristics of NiTi alloys after thermal treatment

The study of the effect of thermal treatment conditions on NiTi alloy used in biomedicine was carried out. The experimental samples of NiTi alloy with 55.8 wt% Ni were subjected to the heat treatment. The thermal regimes consisted of aging treatment at 300, 350 and 400 °C for 30 minutes followed by...

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Published inIOP conference series. Materials Science and Engineering Vol. 726; no. 1; pp. 12019 - 12023
Main Authors Drápala, J, Losertová, M, Štencek, M, Konečná, K, Matýsek, D, Sevostyanov, M A
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.01.2020
Subjects
Aging (metallurgy)
Air cooling
Alloys
Hardness measurement
Heat treating
Heat treatment
Intermetallic compounds
Microhardness
Microstructure
Nickel base alloys
Nickel compounds
Nickel titanides
Optical microscopy
Shape memory alloys
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Summary:The study of the effect of thermal treatment conditions on NiTi alloy used in biomedicine was carried out. The experimental samples of NiTi alloy with 55.8 wt% Ni were subjected to the heat treatment. The thermal regimes consisted of aging treatment at 300, 350 and 400 °C for 30 minutes followed by air cooling. The microstructures before and after the heat treatment were observed by optical microscopy. The study was completed by the microhardness measurement and XRD analysis. The obtained results show that the aging temperatures led to microstructural and microhardness changes for the investigated alloy.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/726/1/012019