Influence of thermal activation on changes of mechanical properties and tensile fracture morphology surface of Ni-base metallic glasses

• Autorzy: Griner S. , Poloczek T. , Nowosielski R.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The paper presents a structural relaxation and crystallization process of Ni68.7Cr6.6Fe2.65Si7.8B14C0.25 metallic glasses. The Ni68.7Cr6.6Fe2.65Si7.8B14C0.25 metallic glasses were produced by the CBMS method for two different conditions of casting at different cooling rate. Design/methodology/approach: The relaxation and crystallization of Ni68.7Cr6.6Fe2.65Si7.8B14C0.25 metallic glasses by methods: mechanical tests, scanning electron microscopy (SEM) and internal friction (IF) were studied. Findings: The investigation showed that conditions of vitrification (different, but higher than critical cooling rate) influence on different course of elementary structural relaxation processes during thermal activation. Research limitations/implications: The differences in temperature of the beginning of elementary relaxation processes and crystallization processes of alloy, in relation to strip thickness were disclosed. Practical implications: The course of relaxation processes can be used for analysis of thermal stability of metallic glasses. Originality/value: The paper presents those conditions of vitrification influence on different course structural relaxation processes during thermal activation.

Słowa kluczowe

EN

amorphous materials; crystallization; metallic glasses

PL

materiały amorficzne; krystalizacja; szkła metaliczne

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2010
• Tom: Vol. 42, nr 1
• Strony: 13--20
• Opis fizyczny: Bibliogr. 19 poz.

Twórcy

autor

Griner S.

autor

Poloczek T.

autor

Nowosielski R.

• Division of Nanocrystalline and Functional Materials and Sustainable Pro-ecological Technologies, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland,

Bibliografia

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