Eutectic Solidification Processing

Eutectic Solidification Processing

Crystalline and Glassy Alloys

1st Edition - November 1, 1983

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  • Author: Roy Elliott
  • eBook ISBN: 9781483144818

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Description

Eutectic Solidification Processing: Crystalline and Glassy Alloys deals with solidification theory and its application to eutectic processing of crystalline and glassy alloys. The underlying theme is an analysis of the different paths taken by the liquid-solid transformation as the cooling rate increases and a description of the structure and properties of the solid formed, ranging from equilibrium to metastable phase formation in castings, to metallic glass formation in splat quenched ribbons. This text has seven chapters; the first of which describes the main characteristics of the liquid-solid transformation. The chapters that follow show how control over composition, trace impurities, heat flow and cooling rate, and nucleation and growth gives rise to a wide range of solidification structures. Models of the nucleation and growth of eutectic and primary phases are analyzed and used to explain how cast microstructures are formed. Aluminum casting alloys and all types of cast iron are discussed, along with primary phase formation, the dependence of the extent of segregation on solidification conditions, and the practice of segregation prevention during solidification. This book also describes the importance of fluid flow in producing macroscopic segregation in large ingots and considers ways of minimizing this defect. Finally, this book gives a brief account of the various types of metallic glasses, their fabrication, important properties, and potential applications. This book will be of interest to materials scientists and industrial materials engineers.

Table of Contents


  • 1 The Liquid-Solid Transformation in Alloys Close to the Eutectic Composition

    Introduction

    Thermodynamic Criterion for Liquid-Solid Equilibrium in a Metal

    The Liquid-Solid Transformation in a Metal

    Thermodynamic Criterion for Equilibrium in Alloys

    The Liquid-Solid Transformation in an Alloy

    Diffusionless Solidification

    The Liquid-Glass Transformation in Alloys

    Metastable-Phase Formation in the Liquid-Solid Transformation

    References

    2 The Eutectic Solidification Process

    Introduction

    Nucleation in Eutectic Solidification

    Homogeneous Nucleation

    Heterogeneous Nucleation

    Nucleation and Characteristics of a Eutectic Grain

    The Grain Structure of a Casting

    References

    3 Growth in Normal Eutectic Solidification

    Introduction

    The Steady-State Lamellar Growth Problem

    The Jackson and Hunt Analysis

    Experimental Observations during Lamellar Growth

    Other Features of the Jackson and Hunt Theory

    Assessment of the Jackson and Hunt Analysis

    The Analysis of Lamellar Growth

    References

    4 Growth in Anomalous Eutectic Solidification

    Introduction

    Criterion for Faceting during Growth

    The Classification of Eutectic Microstructures

    Anomalous Structures

    References

    5 Aluminum-Silicon Alloys and Cast Irons: Commercially Important Anomalous Alloys

    Introduction

    Aluminum-Silicon Eutectic Structures

    Types and Properties of Aluminum Alloys

    Types and Properties of Cast Iron

    References

    6 Primary-Phase Solidification in Alloys Close to the Eutectic Composition

    Introduction

    Faceted Primary-Phase Morphologies

    Non-Faceted Primary-Phase Morphology

    The Brody-Flemings Model of a Dendritic Array

    Developments of the Brody-Flemings Model

    Alternative Models of the Dendritic Array

    The Influence of Fluid Flow on Solidification

    The Coupled Zone

    Monotectic Solidification

    References

    7 Production, Properties and Uses of In-Situ Composites and Metallic Glasses

    Production of In-Situ Composites

    Tensile Behavior of In-Situ Composites

    Creep Behavior of In-Situ Composites

    Fatigue Behavior of In-Situ Composites

    Microstructural Stability of In-Situ Composites

    The Production of Metastable Structures and Metallic Glasses

    The Properties and Uses of Metallic Glasses

    References

    Index


Product details

  • No. of pages: 378
  • Language: English
  • Copyright: © Butterworth-Heinemann 1983
  • Published: November 1, 1983
  • Imprint: Butterworth-Heinemann
  • eBook ISBN: 9781483144818

About the Author

Roy Elliott

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