Effect of micro-additions of Mo, P, Si and Ti on the thermal stability of Ni sub 24 Zr sub 76 metallic glass

Journal Article · Tue Jan 01 04:00:00 EST 1991 · Acta Metallurgica; (United States)

OSTI ID:7177305

Ghosh, G; Chandrasekaran, M; Delaey, L ^[1]

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1. Dept. of Metallurgy and Materials Engineering, Katholieke Univ. Leuven, De Croylaan 2, B-3030 Heverlee (BE)

In this paper, the effects of micro-additions (about 1 at.%) of Mo, Ti, Si and P on the thermal stability and crystallization behavior of Ni{sub 24}Zr{sub 76} metallic glass have been investigated. Dynamic devitrification process of these melt-spun amorphous alloys have been followed by means of differential scanning calorimetry, X-ray diffraction, and transmission electron microscopy. The last two techniques have been employed for studying the microstructural evolution and for identification of the phases formed after crystallization of these alloys. Addition of the above elements results in an increase in thermal stability as indicated by the increase in crystallization temperature, and also by the increase in difference between the crystallization temperature and the glass transition temperature. The enhancement of the thermal stability has been analyzed in terms of the atomic size difference effect, cohesive energy effect, elastic property/physical parameter and thermodynamics of alloying effect. It is found that the enhancement of thermal stability can be well correlated with the thermodynamics of alloying behavior of the third elements in Ni{sub 24}Zr{sub 76} alloy.

• OSTI ID: 7177305
• Journal Information: Acta Metallurgica; (United States), Journal Name: Acta Metallurgica; (United States) Vol. 39:1; ISSN 0001-6160; ISSN AMETA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102 -- Metals & Alloys-- Structure & Phase Studies
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
COHERENT SCATTERING
CRYSTAL STRUCTURE
CRYSTALLIZATION
DIFFERENTIAL THERMAL ANALYSIS
DIFFRACTION
ELASTICITY
ELECTRON MICROSCOPY
MECHANICAL PROPERTIES
METALLIC GLASSES
MICROSCOPY
MICROSTRUCTURE
MOLYBDENUM ADDITIONS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
PHASE TRANSFORMATIONS
PHOSPHORUS ADDITIONS
PHYSICAL PROPERTIES
SCATTERING
SILICON ADDITIONS
SILICON ALLOYS
STABILITY
TENSILE PROPERTIES
THERMAL ANALYSIS
THERMODYNAMIC PROPERTIES
TITANIUM ADDITIONS
TITANIUM ALLOYS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
ZIRCONIUM ALLOYS