Characterization of NiTi shape memory alloy prepared by self-sustainable high-temperature synthesis

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F14%3A00326065" target="_blank" >RIV/68407700:21340/14:00326065 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Characterization of NiTi shape memory alloy prepared by self-sustainable high-temperature synthesis

Popis výsledku v původním jazyce

Microstructure of NiTi shape memory alloy prepared by Self-sustainable High-temperature Synthesis (SHS) under different conditions was characterized. Slow heating (20 °C.min-1) leads to a heterogeneous structure composed of various Ni-Ti phases and high porosity. The microstructure consisting of NiTi and Ti2Ni phases can be obtained by rapid heating (over 300 °C.min-1). Sufficient reactive sintering temperature to obtain NiTi phase is 900 °C. Further increase of the SHS initiation temperature to 1100 °C reduces porosity and the amount of the Ti2Ni phase. The lowest porosity and lowest amount of the undesirable Ti2Ni phase were achieved by utilization of coarse titanium powder (200-600 μm) with fresh surface, produced by mechanical machining, or by the increase of nickel content in the alloy. However, the change of the nickel content induced the formation of the Ni4Ti3 phase.

Název v anglickém jazyce

Characterization of NiTi shape memory alloy prepared by self-sustainable high-temperature synthesis

Popis výsledku anglicky

Microstructure of NiTi shape memory alloy prepared by Self-sustainable High-temperature Synthesis (SHS) under different conditions was characterized. Slow heating (20 °C.min-1) leads to a heterogeneous structure composed of various Ni-Ti phases and high porosity. The microstructure consisting of NiTi and Ti2Ni phases can be obtained by rapid heating (over 300 °C.min-1). Sufficient reactive sintering temperature to obtain NiTi phase is 900 °C. Further increase of the SHS initiation temperature to 1100 °C reduces porosity and the amount of the Ti2Ni phase. The lowest porosity and lowest amount of the undesirable Ti2Ni phase were achieved by utilization of coarse titanium powder (200-600 μm) with fresh surface, produced by mechanical machining, or by the increase of nickel content in the alloy. However, the change of the nickel content induced the formation of the Ni4Ti3 phase.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

<a href="/cs/project/GA14-03044S" target="_blank" >GA14-03044S: Příprava slitin NiTi s tvarovou pamětí reaktivní sintrací</a><br>

Návaznosti

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

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název statě ve sborníku

Euro PM 2014 Congress and Exhibition, Proceedings

ISBN

9781899072446

ISSN

—

e-ISSN

—

Počet stran výsledku

6

Strana od-do

—

Název nakladatele

European Powder Metallurgy Association (EPMA)

Místo vydání

Shrewsburry

Místo konání akce

Salzburg

Datum konání akce

21. 9. 2014

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—