Overview

Ultra fine-grained metals can show exceptional ductility, known as superplasticity, during sheet forming. The higher ductility of superplastic metals makes it possible to form large and complex components in a single operation without joints or rivets. The result is less waste, lower weight and manufacturing costs, high precision and lack of residual stress associated with welding which makes components ideal for aerospace, automotive and other applications. Superplastic forming of advanced metallic materials summarises key recent research on this important process. Part one reviews types of superplastic metals, standards for superplastic forming, processes and equipment. Part two discusses ways of modelling superplastic forming processes whilst the final part of the book considers applications, including superplastic forming of titanium, aluminium and magnesium alloys. With its distinguished editor and international team of contributors, Superplastic forming of advanced metallic materials is a valuable reference for metallurgists and engineers in such sectors as aerospace and automotive engineering. Note: The Publishers wish to point out an error in the authorship of Chapter 3 which was originally listed as: G. Bernhart, Clément Ader Institute, France. The correct authorship is: G Bernhart, P. Lours, T. Cutard, V. Velay, Ecole des Mines Albi, France and F. Nazaret, Aurock, France. The Publishers apologise to the authors for this error.

Full Product Details

Author:   G Giuliano (University of Cassino, Italy)
Publisher:   Elsevier Science & Technology
Imprint:   Woodhead Publishing Ltd
Volume:   44
Dimensions:   Width: 15.60cm , Height: 2.80cm , Length: 23.40cm
Weight:   0.730kg
ISBN:  

9781845697532

ISBN 10:   1845697537
Pages:   384
Publication Date:   27 June 2011
Audience:   Professional and scholarly ,  Professional & Vocational
Format:   Hardback
Publisher's Status:   Active
Availability:   In Print  
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Table of Contents

Contributor contact details Preface Part I: Superplastic forming methods Chapter 1: Metals for superplastic forming Abstract: 1.1 Introduction 1.2 Historical aspects of superplasticity 1.3 Types of superplastic materials 1.4 Grain refinement 1.5 Processing of commercially significant alloys to develop superplastic microstructures 1.6 High strain rate superplasticity 1.7 Grain refinement by severe plastic deformation 1.8 Mechanisms of superplasticity 1.9 Sources of further information and advice 1.10 Acknowledgements Chapter 2: Standards for superplastic forming of metals Abstract: 2.1 Introduction 2.2 Need for standards 2.3 Existing standards 2.4 Issues with existing standards 2.5 Towards improved standards Chapter 3: Processes and equipment for superplastic forming of metals Abstract: 3.1 Introduction 3.2 Superplastic forming processes 3.3 Forming equipment 3.4 Forming dies Conclusion Chapter 4: High-temperature lubricants for superplastic forming of metals Abstract: 4.1 Introduction 4.2 Lubrication mechanisms 4.3 SPF lubricants 4.4 Influence of friction and lubricant on forming 4.5 Testing and evaluation of lubricants 4.6 Production issues 4.7 Conclusions Chapter 5: The use of laser surface modification in combined superplastic forming and diffusion bonding of metals Abstract: 5.1 Introduction 5.2 Effect of laser surface modification on alloy surface 5.3 Diffusion bonding of laser surface modified alloys 5.4 Simulation of the bonding process 5.5 Conclusion 5.7 Appendix: List of symbols Part II: Modelling of superplastic forming Chapter 6: Mathematical modelling of superplastic metal sheet forming processes Abstract: 6.1 Introduction 6.2 Membrane theory 6.3 Flow rule 6.4 Analysis of superplastic free forming processes 6.5 Material constants from bulging tests Chapter 7: Finite element modelling of thin metal sheet forming Abstract: 7.1 Introduction 7.2 Continuum model 7.3 Finite element formulation and time integration schemes 7.4 The incremental flow formulation 7.5 Pressure cycle algorithms 7.6 Die representation and contact algorithms 7.7 Commercial codes 7.8 Applications 7.9 Future trends and recommendations for further research Chapter 8: Constitutive equations for modelling superplastic forming of metals Abstract: 8.1 Introduction 8.2 Constitutive equations for superplastic alloys 8.3 Determination of constitutive equations from experimental data 8.4 Case study: simulation of superplastic forming 8.5 Conclusions Chapter 9: Predicting instability in superplastic forming of metals Abstract: 9.1 Introduction 9.2 Theoretical considerations 9.3 Forming analyses and experiments 9.4 Results and discussion 9.5 Conclusions and future trends Part III: Applications of superplastic forming Chapter 10: Superplastic forming and diffusion bonding of titanium alloys Abstract: 10.1 Introduction 10.2 Titanium alloys 10.3 The superplastic forming/diffusion bonding process 10.4 Applications 10.5 Sources of further information and advice 10.6 Acknowledgements Chapter 11: Superplastic forming of aluminium alloys Abstract: 11.1 Introduction 11.2 History 11.3 Superplastic aluminium alloys 11.4 Cavitation in superplastic aluminium alloys 11.5 High strain rate superplasticity 11.6 Exploitation of superplastic aluminium alloys Chapter 12: Quick Plastic Forming of aluminium alloys Abstract: 12.1 Introduction 12.2 QPF process overview 12.3 Hot forming systems: prior deficiencies and new concepts 12.4 Integrally heated tool system 12.5 Tool heating system 12.6 Temperature distribution in a deck-lid inner panel tool 12.7 Ancillary benefits of integrally heated tools 12.9 Material development 12.10 Lubrication 12.11 Conclusions Chapter 13: Superplastic forming of magnesium alloys Abstract: 13.1 Introduction 13.2 History 13.3 Properties of magnesium 13.4 Superplasticity in magnesium alloys 13.5 Manufacture of superplastic magnesium alloy sheet 13.6 Superplastic forming of magnesium components Chapter 14: Superplastic micro-tubes fabricated by dieless drawing processes Abstract: 14.1 Introduction 14.2 Industrial application of micro-tubes 14.3 Fundamentals of dieless drawing processes 14.4 Superplastic dieless drawing processes 14.5 FE simulation of superplastic dieless drawing processes 14.6 Grain refinement process of metal tubes for superplastic dieless drawing process 14.7 Other applications 14.8 Conclusion Index

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Author Information

Gillo Giuliano works in the Department of Mechanics, Structures and Environment at the University of Cassino, Italy. Professor Giuliano is internationally-known for his work on superplasticity.

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