Correlation Between Superheated Liquid Fragility And Onset Temperature Of Crystallization For Al-Based Amorphous Alloys

• Autorzy: Guo J. , Hu X. , Liu J. , Feng T. , Yoon E. Y. , Kim H. S.

Identyfikatory

DOI

10.1515/amm-2015-0169

Warianty tytułu

PL

Korelacja między krytycznymi parametrami cieczy i temperaturą początku krystalizacji dla amorficznych stopów na bazie Al

• Języki publikacji: EN

Abstrakty

EN

Amorphous alloys or metallic glasses have attracted significant interest in the materials science and engineering communities due to their unique physical, mechanical, and chemical properties. The viscous flow of amorphous alloys exhibiting high strain rate sensitivity and homogeneous deformation is considered to be an important characteristic in thermoplastic forming processes performed within the supercooled liquid region because it allows superplastic-like deformation behavior. Here, the correlation between the superheated liquid fragility, and the onset temperature of crystallization for Al-based alloys, is investigated. The activation energy for viscous flow of the liquid is also investigated. There is a negative correlation between the parameter of superheated liquid fragility and the onset temperature of crystallization in the same Al-based alloy system. The activation energy decreases as the onset temperature of crystallization increases. This indicates that the stability of a superheated liquid can affect the thermal stability of the amorphous alloy. It also means that a liquid with a large superheated liquid fragility, when rapidly solidified, forms an amorphous alloy with a low thermal stability.

Słowa kluczowe

EN

superheated liquid fragility; onset temperature of crystallization; thermal stability

PL

krytyczny parametr cieczy; temperatura początku krystalizacji; stabilność termiczna

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2015
• Tom: Vol. 60, iss. 2B
• Strony: 1543--1546
• Opis fizyczny: Bibliogr. 29 poz., rys.

Twórcy

autor

Guo J.

• Pohang University of Science and Technology (Postech), Center for Advanced Aerospace Materials, Pohang, Korea
• Shandong Provincial Key Laboratory of Horticultural Machineries and Equipments, Taian, China
• Shandong Agricultural University, Taian, China

autor

Hu X.

• Shandong Provincial Key Laboratory of Horticultural Machineries and Equipments, Taian, China
• Shandong Agricultural University, Taian, China

autor

Liu J.

• Shandong Provincial Key Laboratory of Horticultural Machineries and Equipments, Taian, China
• Shandong Agricultural University, Taian, China

autor

Feng T.

• Shandong Provincial Key Laboratory of Horticultural Machineries and Equipments, Taian, China
• Shandong Agricultural University, Taian, China

autor

Yoon E. Y.

• Korea Institute of Materials Science (Kims), Changwon, Korea

autor

Kim H. S.

• Pohang University of Science and Technology (Postech), Center for Advanced Aerospace Materials, Pohang, Korea

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