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Magnesium, Magnesium Alloys, and Magnesium Composites

ISBN: 978-0-470-49417-2
257 pages
March 2011
Magnesium, Magnesium Alloys, and Magnesium Composites (0470494174) cover image
A look at the current and future uses of magnesium-based products and their role in the world's environmental and technological revolution

The lightest of all structural metals, having one-fourth the density of steel and two-thirds that of aluminum, magnesium has already been adopted as an alternative construction material in applications as far ranging as automotive and sports equipment, electronics, and space technology. In a world concerned with minimizing the environmental impact of products, the choice of light-weight, energy-saving, and high-performance materials, like magnesium, would seem a small, significant step towards improving life on this planet. Magnesium, Magnesium Alloys, and Magnesium Composites introduces the science and current applications of this important metal, shedding light on the magnesium-based composites developed over the last fifteen years. Chapters include in-depth discussion of:

  • The characteristics of pure magnesium—including atomic properties and crystal structure as well as physical, electrical, and mechanical properties

  • Magnesium alloys—and the effects of the alloying elements, such as aluminum, lithium, copper, nickel, and silicon

  • The properties of magnesium-based composites—and the effects of different types (metallic, ceramic, interconnected, and intermetallic) of reinforcements of varying length (from micron scale to nanometric length)

  • Corrosion aspects of magnesium-based materials

  • Magnesium-based products in medicine, sports equipment, and the automotive, aerospace, and electronics industries

Bringing together, for the first time, the science, properties, and technologies relating to the current and future uses of magnesium, this important reference also offers readers a glimpse of a not-too-distant world in which environmental safety and sound engineering are a reality.

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PREFACE.

ACKNOWLEDGMENTS.

1 INTRODUCTION TO MAGNESIUM.

1.1 Introduction.

1.2 Characteristics of Pure Magnesium.

1.3 Applications.

1.4 Summary.

References.

2 SYNTHESIS TECHNIQUES FOR MAGNESIUM-BASED MATERIALS.

2.1 Introduction.

2.2 Liquid Phase Processes.

2.3 Solid Phase Process.

2.4 Disintegrated Melt Deposition Method.

2.5 Mechanical Disintegration and Deposition Method.

2.6 Summary.

References.

3 MAGNESIUM ALLOYS.

3.1 Introduction.

3.2 Casting Alloys.

3.3 Wrought Alloys.

3.4 Magnesium Elektron Series Alloys.

3.5 Magnesium Alloys for Elevated Temperature Applications.

3.6 Magnesium-Based Bulk Metallic Glasses.

References 81

4 FUNDAMENTALS OF METAL MATRIX COMPOSITES.

4.1 Introduction.

4.2 Materials.

4.3 Interface Between Matrix and Reinforcement.

4.4 Theoretical Prediction of Properties.

4.5 Summary.

References.

5 MAGNESIUM COMPOSITES.

5.1 Introduction.

5.2 Materials.

5.3 Magnesium-Based Composites with Al2O3.

5.4 Magnesium-Based Composites with MgO.

5.5 Magnesium-Based Composites with SiC.

5.6 Magnesium-Based Composites with Y2O3.

5.7 Magnesium-Based Composites with ZrO2.

5.8 Magnesium-Based Composites with CNT.

5.9 Magnesium-Based Composites with Metallic Additions.

5.10 Bimetal Mg/Al Macrocomposite.

6 CORROSION ASPECTS OF MAGNESIUM-BASED MATERIALS.

6.1 Introduction.

6.2 Types of Corrosion.

6.3 Influence of Impurity.

6.4 Corrosion Behavior of Magnesium-Based Materials.

6.5 Ways to Reduce Corrosion.

6.6 Summary.

References.

7 STRENGTH–DUCTILITY COMBINATIONS OF MAGNESIUM-BASED MATERIALS.

7.1 0.2% Yield Strength < 100 MPa and Ductility Matrix.

7.2 0.2% Yield Strength 100–150 MPa and Ductility Matrix.

7.3 0.2% Yield Strength 150–200 MPa and Ductility Matrix.

7.4 0.2% Yield Strength 200–250 MPa and Ductility Matrix.

7.5 0.2% Yield Strength 250–300 MPa and Ductility Matrix.

7.6 0.2% Yield Strength > 300 MPa and Ductility Matrix.

APPENDIX: LIST OF SOME MAGNESIUM SUPPLIERS.

ABOUT THE AUTHORS.

INDEX.

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Manoj Gupta is an Associate Professor and head of the Materials Group?of Mechanical Engineering at the National University of Singapore.?

Nai Mui Ling Sharon?was a research fellow in the Department of Mechanical Engineering at the National University of Singapore at the time she coauthored the book. Currently, she is?an Assistant Research Scientist at the Singapore Institute of Manufacturing Technology (SIMTech).

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"This book is the first to provide readers insight into the science, characteristics, and applications of current and futuristic magnesium-based materials, with particular emphasis placed upon the properties of magnesium-based composites and the effects of different types (metallic, ceramic, interconnected and intermetallic) of reinforcements from micron length scale to nanometric length scale on the properties of the resultant composites." (Morningstar News, 8 March 2011)
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