Internal friction in Cu-Ti glass

Journal Article · Thu Dec 01 00:00:00 EST 1994 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(94)90077-9· OSTI ID:6989146

Moorthy, S A; Baburaj, E G; Dey, G K ^[1]

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1. Bhabha Atomic Research Centre, Bombay (India). Metallurgy Division

Internal friction in solids is highly structure-sensitive and can be an effective means of studying the kinetics of atomic rearrangements associated with structural relaxation and crystallization in metallic glasses. Though a very large number of studies have been carried out on the crystallization behavior of metallic glasses, studies on structural relaxation, particularly the atomic rearrangement mechanism during structural relaxation, are few in comparison. Internal friction technique is a very useful method of studying thermally activated relaxation in an amorphous structure. Earlier studies have shown that metallic glasses exhibit a considerable amount of internal friction, particularly above 473 K, which besides being markedly reducible by structural relaxation, increases exponentially with increasing temperature, reaching a maximum during crystallization and then falls rapidly to a very low value at the completion of crystallization. In the present investigation, internal friction behavior of Cu[sub 49.5]Ti[sub 50.5] glass is studied in the temperature range covering both structural relaxation and crystallization. The glass transition temperature T[sub g] as well as crystallization temperature T[sub p] are determined and the distribution spectrum of activation energies for structural relaxation is discussed. Some comparisons are made with the DSC results and also with the results obtained in the case of Zr[sub 76]Ni[sub 24] glass.

• OSTI ID: 6989146
• Journal Information: Scripta Metallurgica et Materialia; (United States), Vol. 31:11; ISSN 0956-716X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPPER ALLOYS
CRYSTALLIZATION
INTERNAL FRICTION
METALLIC GLASSES
TITANIUM BASE ALLOYS
EXPERIMENTAL DATA
ALLOYS
DATA
FRICTION
INFORMATION
NUMERICAL DATA
PHASE TRANSFORMATIONS
TITANIUM ALLOYS
360104* - Metals & Alloys- Physical Properties
360102 - Metals & Alloys- Structure & Phase Studies