Properties of Ni-Ti-(Fe,Co,Al) shape memory alloys prepared by self-propagating high- temperature synthesis

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F18%3A43916938" target="_blank" >RIV/60461373:22310/18:43916938 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.21062/ujep/156.2018/a/1213-2489/MT/18/4/655" target="_blank" >http://dx.doi.org/10.21062/ujep/156.2018/a/1213-2489/MT/18/4/655</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.21062/ujep/156.2018/a/1213-2489/MT/18/4/655" target="_blank" >10.21062/ujep/156.2018/a/1213-2489/MT/18/4/655</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Properties of Ni-Ti-(Fe,Co,Al) shape memory alloys prepared by self-propagating high- temperature synthesis

Popis výsledku v původním jazyce

Shape memory, superelasticity and pseudoplasticity are the exceptional properties of Ni-Ti alloys, which are listed among SMAs (Shape Memory Alloys). The carrier of these properties is the intermetallic NiTi phase. In addition to this phase, the Ti2Ni phase is always present, which is hard and brittle, and therefore it is undesirable in the Ni- Ti alloys. The aim of this work was to determine the influence of selected alloying elements (iron, cobalt and aluminium) in two different amounts (1 wt. % and 3 wt. %) on the microstructure, phase composition and amount of the Ti2Ni phase, hardness and transformation temperature of Ni-Ti-X alloy. The samples examined were prepared by self-propagating high-temperature synthesis at sintering temperature of 1100 °C. By altering the selected elements, the Ti2Ni phase was not reduced, on the contrary aluminium increased its amount. The Ni-Ti alloys alloyed with these three alloying elements proved to be harder. The phase transformations were observed only in the sample with 1 wt. % of aluminium at heating and cooling curves from differential scanning calorimetry. © 2018. Published by Manufacturing Technology.

Název v anglickém jazyce

Properties of Ni-Ti-(Fe,Co,Al) shape memory alloys prepared by self-propagating high- temperature synthesis

Popis výsledku anglicky

Shape memory, superelasticity and pseudoplasticity are the exceptional properties of Ni-Ti alloys, which are listed among SMAs (Shape Memory Alloys). The carrier of these properties is the intermetallic NiTi phase. In addition to this phase, the Ti2Ni phase is always present, which is hard and brittle, and therefore it is undesirable in the Ni- Ti alloys. The aim of this work was to determine the influence of selected alloying elements (iron, cobalt and aluminium) in two different amounts (1 wt. % and 3 wt. %) on the microstructure, phase composition and amount of the Ti2Ni phase, hardness and transformation temperature of Ni-Ti-X alloy. The samples examined were prepared by self-propagating high-temperature synthesis at sintering temperature of 1100 °C. By altering the selected elements, the Ti2Ni phase was not reduced, on the contrary aluminium increased its amount. The Ni-Ti alloys alloyed with these three alloying elements proved to be harder. The phase transformations were observed only in the sample with 1 wt. % of aluminium at heating and cooling curves from differential scanning calorimetry. © 2018. Published by Manufacturing Technology.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GBP108%2F12%2FG043" target="_blank" >GBP108/12/G043: Mikro- a nanokrystalické materiály s vysokým podílem rozhraní pro moderní strukturní aplikace, biodegradabilní implantáty a uchovávání vodíku</a><br>

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Manufacturing Technology

ISSN

1213-2489

e-ISSN

—

Svazek periodika

18

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

4

Strana od-do

655-658

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85058030811