The structural features of the amorphous C14 HfNiAl Laves phase

• Autorzy: Mudry S. I. , Shved O. V. , Kulyk Yu.O. , Bulyk I. I. , Borysiuk A. K.

Identyfikatory

DOI

10.5604/01.3001.0011.7171

• Języki publikacji: EN

Abstrakty

EN

Purpose: In order to clarify whether amorphization occurs in the pseudo-binary C14 HfNi0.6Al1.4 Laves phase a detailed investigation of the effect of hydrogen treatment on it phase-structural state has been studied. This type of compounds is of interest due to their high possibility to hydrogen absorption as Laves phase structures and as Hf-Ni alloys. Design/methodology/approach: We used a combination of hydrogen treatment and grinding methods for studying of the processes of controlled structure formation. High temperature transformations of the HfNi0.6Al1.4 alloy were pointed out by means of XRD analysis. Findings: By combination of two amorphization methods and high temperature measurements we have observed a phase structural transformation of the HfNi0.6Al1.4 alloy, which could be presented as: HfNi0.6Al1.4(cryst.) + H2 ® HfNi0.6Al1.4 (nanocryst.) + HfNi0.6Al1.4 (amorphous) + H2 ® HfH2 (amorphous) + AlH3 (amorphous) + Ni. Ferromagnetic- like properties of the pseudo-binary HfNi0.6Al1.4 Laves phase was found. Research limitations/implications: Complex research of HfNi0.6Al1.4 alloy revealed various structure features depending on phase content, thermodynamic parameters and conditions of hydrogen treatment. Obtained results suppose that further studies of structure and physical properties of Hf-Ni-Al alloys will allow to find the methods to control the producing of materials with desired properties. Practical implications: Using of hydrogen treatment is effective to produce Al-based alloys with improved magnetic properties. Originality/value: Treatment in hydrogen atmosphere allows improving the glass-forming ability in Hf-Ni-Al alloys.

Słowa kluczowe

EN

hydrogen treatment; ternary aluminum alloy; amorphous phase; ferromagnetic-like properties; pseudo-binary Laves phase

PL

obróbka wodorem; trójskładnikowy stop aluminium; faza bezpostaciowa; właściwości podobne do ferromagnetycznych

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2018
• Tom: Vol. 89, nr 2
• Strony: 49--54
• Opis fizyczny: Bibliogr. 21 poz.

Twórcy

autor

Mudry S. I.

• Department of Physics of Metals, Ivan Franko National University of Lviv, Kyryla and Mefodiya Str. 8, UA-79005 Lviv, Ukraine

autor

Shved O. V.

• Department of Physics of Metals, Ivan Franko National University of Lviv, Kyryla and Mefodiya Str. 8, UA-79005 Lviv, Ukraine

autor

Kulyk Yu.O.

• Department of Physics of Metals, Ivan Franko National University of Lviv, Kyryla and Mefodiya Str. 8, UA-79005 Lviv, Ukraine

autor

Bulyk I. I.

• Karpenko Physico-Mechanical Institute of the NAS of Ukraine, Naukova Str. 5, 79601 Lviv, Ukraine

autor

Borysiuk A. K.

• Department of Applied Physics and Nanomaterials Science, Lviv Polytechnic National University, Ustiyanovych Str. 5, 79013 Lviv, Ukraine

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018)