Glass transition behavior of Al- and Mg-based amorphous alloys

Akihisa Inoue; Katsumasa Ohtera; Masayoshi Kohinata; An Pang Tsai; Tsuyoshi Masumoto

doi:10.1016/0022-3093(90)90628-Y

Glass transition behavior of Al- and Mg-based amorphous alloys

Akihisa Inoue, Katsumasa Ohtera, Masayoshi Kohinata, An Pang Tsai, Tsuyoshi Masumoto

Center for Exploration of New Inorganic Materials

Research output: Contribution to journal › Article › peer-review

29 Citations (Scopus)

Abstract

AlNi(Y, La or Ce) and MgNi(La or Ce) amorphous alloys were found to exhibit a glass transition prior to their crystallization. The T_g increases from 440 to 582 K with increasing solute concentration. The difference in C_p between amorphous solid (AS) and supercooled liquid (SL) reaches 10 to 18 J/mol-K and the viscosities of these supercooled liquids are of the order 10¹⁴ N.s./m². By the transition of AS to SL, the Young's modulus and tensile strength decrease steeply by 80 to 99 %, accompanied with an increase of elongation by 5 to 36 times.

Original language	English
Pages (from-to)	712-715
Number of pages	4
Journal	Journal of Non-Crystalline Solids
Volume	117-118
Issue number	PART 2
DOIs	https://doi.org/10.1016/0022-3093(90)90628-Y
Publication status	Published - 1990 Feb 1

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Materials Chemistry

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AU - Masumoto, Tsuyoshi

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N2 - AlNi(Y, La or Ce) and MgNi(La or Ce) amorphous alloys were found to exhibit a glass transition prior to their crystallization. The Tg increases from 440 to 582 K with increasing solute concentration. The difference in Cp between amorphous solid (AS) and supercooled liquid (SL) reaches 10 to 18 J/mol-K and the viscosities of these supercooled liquids are of the order 1014 N.s./m2. By the transition of AS to SL, the Young's modulus and tensile strength decrease steeply by 80 to 99 %, accompanied with an increase of elongation by 5 to 36 times.

AB - AlNi(Y, La or Ce) and MgNi(La or Ce) amorphous alloys were found to exhibit a glass transition prior to their crystallization. The Tg increases from 440 to 582 K with increasing solute concentration. The difference in Cp between amorphous solid (AS) and supercooled liquid (SL) reaches 10 to 18 J/mol-K and the viscosities of these supercooled liquids are of the order 1014 N.s./m2. By the transition of AS to SL, the Young's modulus and tensile strength decrease steeply by 80 to 99 %, accompanied with an increase of elongation by 5 to 36 times.

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Glass transition behavior of Al- and Mg-based amorphous alloys

Abstract

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