Detail publikace

Highly mobile twin boundaries in seven-layer modulated Ni-Mn-Ga-Fe martensite

SOZINOV, A. MUSIIENKO, D. SAREN, A. VEŘTÁT, P. STRAKA, L. HECZKO, O. ZELENÝ, M. CHULIST, R. ULLAKKO, K.

Anglický název

Highly mobile twin boundaries in seven-layer modulated Ni-Mn-Ga-Fe martensite

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

en

Originální abstrakt

We report on low twinning stress of 0.2 MPa for type 1 twin boundaries with rational (101) twinning plane and 0.1 MPa for type 2 twin boundaries with rational [(1) over bar 01] twinning direction, in Ni2MnGa0.8Fe0.2 seven-layer modulated martensite exhibiting about 12% stress-induced strain. The studied samples were free of compound twins with (100) and (110) twinning planes. The martensite lattice is monoclinic and shows a long-period commensurate modulation with wave vector q=(2/7)g(110), where g(110) is the reciprocal lattice vector. The investigated alloy has high potential for practical applications due to the low twinning stress and the elevated Curie point T-C=400 K. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd.

Anglický abstrakt

We report on low twinning stress of 0.2 MPa for type 1 twin boundaries with rational (101) twinning plane and 0.1 MPa for type 2 twin boundaries with rational [(1) over bar 01] twinning direction, in Ni2MnGa0.8Fe0.2 seven-layer modulated martensite exhibiting about 12% stress-induced strain. The studied samples were free of compound twins with (100) and (110) twinning planes. The martensite lattice is monoclinic and shows a long-period commensurate modulation with wave vector q=(2/7)g(110), where g(110) is the reciprocal lattice vector. The investigated alloy has high potential for practical applications due to the low twinning stress and the elevated Curie point T-C=400 K. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd.

Klíčová slova anglicky

Magnetic shape memory; Martensite; Twin boundary; Ni-Mn-Ga; Heusler alloy

Vydáno

15.03.2020

Nakladatel

PERGAMON-ELSEVIER SCIENCE LTD

Místo

OXFORD

ISSN

1359-6462

Ročník

178

Číslo

1

Strany od–do

62–66

Počet stran

5

BIBTEX


@article{BUT162376,
  author="Alexei {Sozinov} and Denys {Musiienko} and Andrey {Saren} and Petr {Veřtát} and Ladislav {Straka} and Oleg {Heczko} and Martin {Zelený} and Robert {Chulist} and Kari {UIllakko},
  title="Highly mobile twin boundaries in seven-layer modulated Ni-Mn-Ga-Fe martensite",
  year="2020",
  volume="178",
  number="1",
  month="March",
  pages="62--66",
  publisher="PERGAMON-ELSEVIER SCIENCE LTD",
  address="OXFORD",
  issn="1359-6462"
}