Basics of thermodynamics and phase transitions in complex intermetallics / edited by Esther Belin-Ferre.

Format:

Book

Contributor:

Belin-Ferré, Esther.

Series:

Book Series on Complex Metallic Alloys

Book series on complex metallic alloys ; v. 1

Language:

English

Subjects (All):

Alloys.

Intermetallic compounds.

Physical metallurgy.

Physical Description:

1 online resource (408 p.)

Place of Publication:

Singapore ; Hackensack, NJ : World Scientific, c2008.

Language Note:

English

Summary:

Complex metal alloys (CMAs) comprise a huge group of largely unknown alloys and compounds, where many phases are formed with crystal structures based on giant unit cells containing atom clusters, ranging from tens of to more than thousand atoms per unit cell. In these phases, for many phenomena, the physical length scales are substantially smaller than the unit-cell dimension. Hence, these materials offer unique combinations of properties which are mutually exclusive in conventional materials, such as metallic electric conductivity combined with low thermal conductivity, good light absorption

Contents:

CONTENTS; Foreword; Chapter 1: An introduction to complex metallic alloys and to the CMA network of excellence Jean-Marie Dubois; 1. Introduction; 2. Complexity in reciprocal and real space; 2.1. A definition of CMAs; 2.2. The example of Al-Cr(-Cu)-Fe alloys; 3. The essential property of CMAs; 3.1. The pseudo-gap at the Fermi energy; 3.2. Transport properties; 3.3. Mechanical properties; 3.4. Chemical properties; 4. Surface energy; 4.1. Surface energy in general; 4.2. Experimental; 4.3. Data analysis and upper limit of γS; 5. Inverse Nano-Structuration

5.1. Comparison to Conventional Nano-Structuration5.2. A great potential for future research; 6. Goals and organisation of the NoE CMA; Acknowledgments; References; Chapter 2: Thermodynamics and phase diagrams Livio Battezzati; 1. Introduction; 2. Basic relationships and unary phase diagrams; 3. Simple binary phase diagrams; 4. Three phase equilibria: invariant reactions; 5. Compounds; 6. Metastable phases and phase transformations; References; Chapter 3: Permanent magnets and microstructure Paul McGuiness; 1. Historical introduction to permanent magnets; 2. Permanent-magnet properties

3. Some applications of permanent magnets4. The crystal structure of Nd2Fe14B; 5. Phase relationships in the Nd-Fe-B system; 6. Coercivity and microstructure in Nd-Fe-B permanent magnets; 7. Processing Nd-Fe-B permanent magnets; 7.1. Processing Nd-Fe-B magnets via the sintering route; 7.1.1. Casting; 7.1.2. Powdering; 7.1.3. Pressing and aligning; 7.1.4. Sintering; 7.1.5. Machining, coating and magnetising; 7.2. Processing Nd-Fe-B magnets via the melt-spinning route; 7.2.1. Hot pressing melt-spun ribbons; 7.2.2. Die-upset forging of melt-spun ribbons

7.2.3. Processing Nd-Fe-B magnets via the hydrogenationdisproportionation- desorption-recombination route7.2.4. Other processing techniques; 8. Magnetic properties; 9. Summary; Further reading; Chapter 4: Solidification Peter Gille; 1. Introduction; 2. Thermodynamics and nucleation; 3. Growth kinetics; 4. Phase diagrams; 5. Interface stability; 6. Segregation; 7. Techniques of single crystal growth; 7.1. Bridgman method; 7.2. Czochralski method; 7.3. Kyropoulos method; 7.4. Floating zone method; 7.5. Verneuil method; References; Chapter 5: Diffusive phase transformations Yves Bréchet

1. Introduction and motivation2. Variety of situations in diffusive phase transformations; 3. Diffusion and diffusion equations; 3.1. Basics of diffusion; 3.2. Classical exact solutions; 3.2.1. Parabolic solutions; 3.2.2. Self preserving shapes; 3.3. Classical approximate solutions; 3.3.1. Growth of a sphere: the constant field approximation; 3.3.2. Diffusional growth of a planar front: Zener approximation; 3.3.3. Diffusionnal growth of a needle: Hillert approximation; 4. Precipitation; 4.1. Experimental methods; 4.2. Classical picture; 4.3. Recent developments; 5. Interface migration

5.1. Experimental methods

Notes:

Description based upon print version of record.

Includes bibliographical references.

ISBN:

9786611938352

9781281938350

1281938351

9789812790590

9812790594