New Features on Magnesium Alloys

184 Pages·2016·19.65 MB·English

by  Monteiro W.A. (Ed.)

NEW FEATURES ON
MAGNESIUM ALLOYS
Edited by

Waldemar Alfredo Monteiro
NEW FEATURES ON
MAGNESIUM ALLOYS

Edited by Waldemar Alfredo Monteiro
New Features on Magnesium Alloys
http://dx.doi.org/10.5772/2810
Edited by Waldemar Alfredo Monteiro

Contributors
Zhifeng Wang, Weimin Zhao, Tomasz Tański, Anna Dobrzańska-Danikiewicz,
Tomasz Tański, Szymon Malara, Justyna Domagała-Dubiel, Nina Angrisani,
Jan-Marten Seitz, Andrea Meyer-Lindenberg, Janin Reifenrath, Masafumi Noda,
Yoshihito Kawamura, Tsuyoshi Mayama, Kunio Funami, Parviz Asadi,
Kamel Kazemi-Choobi, Amin Elhami, W.A. Monteiro, S.J. Buso, L.V. da Silva

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First published July, 2012
Printed in Croatia

A free online edition of this book is available at www.intechopen.com
Additional hard copies can be obtained from [email protected]

New Features on Magnesium Alloys, Edited by Waldemar Alfredo Monteiro
p. cm.
ISBN 978-953-51-0668-5

Contents

Preface IX
Section 1 Properties and Microstructure of
Magnesium-Based Quasicrystals 1
Chapter 1 Mg-Based Quasicrystals 3
Zhifeng Wang and Weimin Zhao
Section 2 Surface Treatments of
Magnesium Alloys 27
Chapter 2 Investigation of the Structure and Properties of
PVD and PACVD-Coated Magnesium Die Cast Alloys 29
Tomasz Tański
Chapter 3 Technology Foresight Results
Concerning Laser Surface Treatment of
Casting Magnesium Alloys 53
Anna Dobrzańska-Danikiewicz, Tomasz Tański,
Szymon Malara and Justyna Domagała-Dubiel
Section 3 Orthopaedic Applications – Magnesium Alloys 79
Chapter 4 Rare Earth Metals as Alloying Components in
Magnesium Implants for Orthopaedic Applications 81
Nina Angrisani, Jan-Marten Seitz,
Andrea Meyer-Lindenberg and Janin Reifenrath
Section 4 Mechanical Properties –
Magnesium Alloys 99
Chapter 5 Thermal Stability and Mechanical Properties of
Extruded Mg-Zn-Y Alloys with a Long-Period Stacking
Order Phase and Plastic Deformation 101
Masafumi Noda, Yoshihito Kawamura,
Tsuyoshi Mayama and Kunio Funami
VI Contents

Section 5 Magnesium Alloys –
Welding and Joining Processes 119
Chapter 6 Welding of Magnesium Alloys 121
Parviz Asadi, Kamel Kazemi-Choobi and Amin Elhami
Section 6 Developments on
Magnesium Alloys Applied to Transport 159
Chapter 7 Application of Magnesium Alloys in Transport 161
W.A. Monteiro, S.J. Buso and L.V. da Silva

Preface

Magnesium alloys have always been attractive to designers due to their low density,
only two thirds that of aluminium. This has been a major factor in the widespread use
of magnesium alloy castings and wrought products. The present book gives us an
overview in some special areas of magnesium alloys concerning technological
applications and eco-friendly requirements.
Each chapter brings us a new facet relating to the application of magnesium alloy
including, as an example, researches with rare earth metals as alloying components in
magnesium implants for orthopaedic applications.
Quasicrystals (QCs) are a well-defined ordered phase of solid matter with long-range
quasiperiodic translational order and an orientational order, but no three dimensional
translational periodicity. QC master alloys can be used to strengthen magnesium
alloys (surface coating application for frying pans, surgical blades and hydrogen
storage materials).
A further requirement in recent years has been for superior corrosion performance and
intense improvements have been demonstrated for new magnesium alloys.
Mechanical properties enhancements and corrosion resistance have led to greater
interest in magnesium alloys also for aerospace and specialty applications.
The galvanic corrosion problem can only be solved by proper coating systems.
Magnesium and its alloys form a very thin surface film which indicates that the
underlying metal cannot be completely covered. As a result, magnesium and its alloys
are highly susceptible to corrosion. In the past, the corrosion behavior of magnesium
alloys is the overriding factor to prevent their applications.
Some properties are of interest only for the surface of the material, investigations were
carried out concerning surface treatment of the magnesium alloys by applying of the
physical vapor deposition processes.
The best development and application prospects tentative from an analysis of
mechanical properties of the casting magnesium alloys subjected to laser treatment are
exhibited by those materials into which the particles of titanium and vanadium
carbides were cladded.
X Preface

An effective way to improve the ductility of the special magnesium alloys while
maintaining high strength involves ensuring recovery of the secondary long-period
stacking order phase (LPSO) from kink bands (grain size control of the α-Mg phase)
producing a fine dispersion of the LPSO phase in the α-Mg phases.
During last decade, a substantial advance is made in welding and joining of
magnesium alloys. To improve in conventional fusion welding techniques, new
methods and their hybrids are developed.
Confident that all these high-level contributions are of interest, I would like to extend
my sincere acknowledgments to all those who contributed to the drafting of this book.

Prof. Dr. Waldemar Alfredo Monteiro
1School of Engineering - Presbyterian Mackenzie University,
2Materials Science and Technology Center –
Energetic and Nuclear Researches Institute São Paulo, S.P.,
Brazil