Recent Studies in Materials Science

Patrick R. Lind (Editor)

Series: Materials Science and Technologies
BISAC: TEC021000




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The goal of the first chapter is to express the main achievements in use of the Jahn-Teller effect (JTE) and pseudo JTE (PJTE) in search of materials with enhanced or novel properties, are presented as a part of what is known as materials science.

The hallmark of this entire chapter is the commitment to identify situations in which “waves” are produced and provide a systematic classification of such convective instabilities together with a description of related features based on advanced numerical simulations.

The quality and mechanical or electrical properties of the resulting solids and crystals are adversely affected by thermogravitational convection as it can induce defects in their atomic or molecular structure (this is the case, e.g., of typical crystal-growth techniques such as the horizontal Bridgman (HB), the Floating zone (FZ) or the Czochralski (CZ) methods). This present chapter aims to present a focused review of landmark (past) and very recent contributions on the nature, structure and hierarchy of instabilities of this type of convection.

This chapter is devoted to the investigation of the thermo-kinetics features of overcooled austenite transformation in three grades of 0.75-0.77 wt.% C complex-alloyed (Mn-Si, Mn-Si-Cr-Mo) steel intended for rail applications. Magnetometric and thermal analyses were used to build Time-Temperature-Transformation and Continuous-Cooling-Transformation diagrams presenting the kinetics of austenite transformation in studied steels. (Imprint: Nova)

Chapter 1. The Jahn-Teller and Pseudo Jahn-Teller Effects in Materials Science
(I. B. Bersuker, Institute for Theoretical Chemistry, The University of Texas at Austin, Austin, TX, USA)

Chapter 2. Convective Effects and Traveling Waves in Transparent Oxide Materials processed with the Floating Zone Technique
(Marcello Lappa, Department of Mechanical and Aerospace Engineering, University of Strathclyde, Glasgow, UK)

Chapter 3. Oscillatory and Turbulent Flows of Liquid Metals in Differentially Heated Systems with Horizontal and Non-Horizontal Walls
(Marcello Lappa, and Hermes Ferialdi, Department of Mechanical and Aerospace Engineering, University of Strathclyde, Glasgow, UK)

Chapter 4. Phase-Structural Transformations in Low-Alloyed Steels Intended for Railway Applications
(V.G. Efremenko, S.O. Kuz’min, V.I. Zurnadzhy, M.N. Brykov, Yu.G. Chabak, and T.V. Pastukhova, Physics Department, Priazovskyi State Technical University, Mariupol, Ukraine, and others)


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