Thermal and Time Stability of Amorphous Alloys  book cover
1st Edition

Thermal and Time Stability of Amorphous Alloys

ISBN 9781138068278
Published August 14, 2017 by CRC Press
170 Pages - 67 B/W Illustrations

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Book Description

This reference is dedicated to the problem of time-temperature stability of amorphous (non-crystalline) metal alloys with strongly nonequilibrium structure and unique physical and mechanical properties that are obtained by quenching from the melt at a rate that exceeds one millions of degrees c.o.s. second. As a stability test, the behavior of the plasticity of amorphous alloys is studied. The book examines the fundamental characteristics of amorphous alloys, the basic laws of structural relaxation, generalized information about the phenomenon of the ductile-brittle transition (temper embrittlement), the development of physically justified methods of predicting the stability of the properties, and provides information about the attempts of controlling the structure for the purpose of suppressing or deceleration of the ductile-brittle transition and, as a consequence, increasing the temperature and temporal stability of the amorphous state.

Table of Contents

The main characteristics of amorphous alloys
Structural defects
Plastic deformation

Structural relaxation

The physical nature of ΔT-effect

The ductile–brittle transition phenomenon

Main relationships
Plastic flow and temper brittleness
Analysis of structural models of temper brittleness
Ductile–brittle transition from the viewpoint of mechanics of plastic deformation and fracture
Ductile–brittle transition and the free volume
Inhomogeneities of the structure, forming elastic stress fields under acting loading
Acoustic emission studies
Formation of embrittled surface layers
Investigation of the magnetic, magneto–optical and spectroellipsometric properties
General model of failure in the ductile–brittle transition

Physical criteria for predicting thermal and time stability

Methods for increasing thermal and time stability

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A. M. Glezer, A. I. Potekaev, A. O. Cheretaeva