Constitutive model for NiTiFe shape memory alloys exhibiting pronounced R-phase transformation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F22%3A00564407" target="_blank" >RIV/61388998:_____/22:00564407 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/22:00564407

Výsledek na webu

<a href="https://dl.asminternational.org/shape-memory/proceedings/SMST%202022/84291/67/18984" target="_blank" >https://dl.asminternational.org/shape-memory/proceedings/SMST%202022/84291/67/18984</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.31399/asm.cp.smst2022p0067" target="_blank" >10.31399/asm.cp.smst2022p0067</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Constitutive model for NiTiFe shape memory alloys exhibiting pronounced R-phase transformation

Popis výsledku v původním jazyce

Specific heat treatment or addition of a ternary element may induce a two-stage transformation sequence in NiTi shape memory alloys (SMA). A typical example of intermediating phases is so-called R-phase, a rhombohedral distortion of the cubic austenitic phase, which exhibits much lower transformation strain and thermal hysteresis than the subsequent transition to monoclinic martensite. In specific alloys, e.g., in NiTi slightly enriched by iron, the temperature and stress intervals in which R-phase is stable are quite broad. This paper presents an enhanced constitutive model for NiTi SMA featuring the R-phase transition. The model recognizes R-phase as a distinct phase, respects the coupled influence of stress and temperature on any phase transformation, and covers reorientation (reconfiguration) of both martensite and R-phase with applied stress.

Název v anglickém jazyce

Constitutive model for NiTiFe shape memory alloys exhibiting pronounced R-phase transformation

Popis výsledku anglicky

Specific heat treatment or addition of a ternary element may induce a two-stage transformation sequence in NiTi shape memory alloys (SMA). A typical example of intermediating phases is so-called R-phase, a rhombohedral distortion of the cubic austenitic phase, which exhibits much lower transformation strain and thermal hysteresis than the subsequent transition to monoclinic martensite. In specific alloys, e.g., in NiTi slightly enriched by iron, the temperature and stress intervals in which R-phase is stable are quite broad. This paper presents an enhanced constitutive model for NiTi SMA featuring the R-phase transition. The model recognizes R-phase as a distinct phase, respects the coupled influence of stress and temperature on any phase transformation, and covers reorientation (reconfiguration) of both martensite and R-phase with applied stress.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název statě ve sborníku

Conference Proceedings from International Conference on Shape Memory and Superelastic Technologies, SMST 2022

ISBN

978-171385538-5

ISSN

—

e-ISSN

—

Počet stran výsledku

2

Strana od-do

67-68

Název nakladatele

ASM International

Místo vydání

Materials Park, Ohio

Místo konání akce

Carlsbad

Datum konání akce

16. 5. 2022

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—