Characteristic behavior of La55Al25Ni20 amorphous alloy under rapid heating

Yasunori Saotome; Keiichi Roppongi; Tao Zhang; Akihisa Inoue

doi:10.1016/S0921-5093(00)01604-X

Characteristic behavior of La₅₅Al₂₅Ni₂₀ amorphous alloy under rapid heating

Yasunori Saotome, Keiichi Roppongi, Tao Zhang, Akihisa Inoue

Institute for Materials Research (IMR)

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

16 Citations (Scopus)

Abstract

Glass transition and crystallization phenomena of LaAlNi amorphous alloy under rapid heating were studied in this paper. A cylindrical specimen of 2 mm in diameter was heated by induction heating at a rate of up to 1000 K/s. During heating, glass transition temperature T_g and crystallization temperature T_x increase with increasing heating rate. Furthermore, the temperature range of the supercooled liquid state, ΔT_x, becomes wider. In addition, deformation behavior during heating was studied under compressive loads. The material exhibits a Newtonian viscous flow in Τ_x, and the normal viscosity of the flow decreases with increasing heating rate.

Original language	English
Pages (from-to)	743-746
Number of pages	4
Journal	Materials Science and Engineering A
Volume	304-306
Issue number	1-2
DOIs	https://doi.org/10.1016/S0921-5093(00)01604-X
Publication status	Published - 2001 May 31

Keywords

Amorphous alloy
Crystallization
Rapid heating
Supercooled liquid
Transition temperature

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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title = "Characteristic behavior of La55Al25Ni20 amorphous alloy under rapid heating",

abstract = "Glass transition and crystallization phenomena of LaAlNi amorphous alloy under rapid heating were studied in this paper. A cylindrical specimen of 2 mm in diameter was heated by induction heating at a rate of up to 1000 K/s. During heating, glass transition temperature Tg and crystallization temperature Tx increase with increasing heating rate. Furthermore, the temperature range of the supercooled liquid state, ΔTx, becomes wider. In addition, deformation behavior during heating was studied under compressive loads. The material exhibits a Newtonian viscous flow in Τx, and the normal viscosity of the flow decreases with increasing heating rate.",

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author = "Yasunori Saotome and Keiichi Roppongi and Tao Zhang and Akihisa Inoue",

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AU - Saotome, Yasunori

AU - Roppongi, Keiichi

AU - Zhang, Tao

AU - Inoue, Akihisa

PY - 2001/5/31

Y1 - 2001/5/31

N2 - Glass transition and crystallization phenomena of LaAlNi amorphous alloy under rapid heating were studied in this paper. A cylindrical specimen of 2 mm in diameter was heated by induction heating at a rate of up to 1000 K/s. During heating, glass transition temperature Tg and crystallization temperature Tx increase with increasing heating rate. Furthermore, the temperature range of the supercooled liquid state, ΔTx, becomes wider. In addition, deformation behavior during heating was studied under compressive loads. The material exhibits a Newtonian viscous flow in Τx, and the normal viscosity of the flow decreases with increasing heating rate.

AB - Glass transition and crystallization phenomena of LaAlNi amorphous alloy under rapid heating were studied in this paper. A cylindrical specimen of 2 mm in diameter was heated by induction heating at a rate of up to 1000 K/s. During heating, glass transition temperature Tg and crystallization temperature Tx increase with increasing heating rate. Furthermore, the temperature range of the supercooled liquid state, ΔTx, becomes wider. In addition, deformation behavior during heating was studied under compressive loads. The material exhibits a Newtonian viscous flow in Τx, and the normal viscosity of the flow decreases with increasing heating rate.

KW - Amorphous alloy

KW - Crystallization

KW - Rapid heating

KW - Supercooled liquid

KW - Transition temperature

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