Effect of pressure on the phase stability and magnetostructural transitions in nickel-rich NiFeGa ribbons

JOURNAL OF ALLOYS AND COMPOUNDS

卷:844

Article

Manchon-Gordon, A. F.¹  Ipus, J. J.¹  Kowalczyk, M.²  Wojcik, A.³  Blazquez, J. S.¹  Conde, C. F.¹  Maziarz, W.³  Svec, P., Sr.⁴  Kulik, T.²  Conde, A.¹ 

[1] Univ Seville, CSIC, ICMSE, Dept Fis Mat Condensada, POB 1065, Seville 41080, Spain

[2] Warsaw Univ Technol, Fac Mat Sci & Engn, 141 Woloska St, PL-02507 Warsaw, Poland

[3] Polish Acad Sci, Inst Met & Mat Sci, 25 Reymonta St, PL-30059 Krakow, Poland

[4] Slovak Acad Sci, Inst Phys, Dubravska Cesta 9, Bratislava 84511 45, Slovakia

关键词: Magnetic shape memory alloys;    Martensite structure;    14 M modulated phase;    Magnetostructural transition;   

DOI  :  10.1016/j.jallcom.2020.156092

来源: Elsevier

【 摘 要 】

Ribbons of a Ni55Fe19Ga26 Heusler alloy were prepared by melt spinning technique. The effect of pressure on magnetostructural transitions was studied comparing as-spun ribbons to ribbons previously sub mitted to an axial pressure and to powder obtained from manually grinded as-spun ribbons. The martensitic transformation present in the as-spun ribbon almost vanishes after pulverization. The structural change driven by mechanical treatment is a stress-induced intermartensitic transformation from a 14 M modulated to a non-modulated tetragonal (NM) structure. There is a progressive change from the structure of as-spun samples to that of the pulverized one in samples submitted to axial pressures as it increases. (C) 2020 Elsevier B.V. All rights reserved.

【 授权许可】

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