Jien-Wei Yeh – författare

This book provides a complete review of the current state of the art in the field of high entropy alloys (HEA). The conventional approach to alloy design is to select one principal element and add elements to it in minor quantities in order to improve the properties. In 2004, Professor J.W. Yeh and his group first reported a new approach to alloy design, which involved mixing elements in equiatomic or near-equiatomic proportions, to form multi-component alloys with no single principal element. These alloys are expected to have high configurational entropy and hence were termed as "high entropy alloys."HEAs have a broad range of structures and properties, and may find applications in structural, electrical, magnetic, high-temperature, wear-resistant, corrosion-resistant, and oxidation-resistant components. Due to their unique properties, high entropy alloys have attracted considerable attention from both academics and technologists. This book presents the fundamental knowledge present in the field, the spectrum of various alloy systems and their characteristics studied to date, current key focus areas, and the future scope of the field in terms of research and technological applications.

Encompasses the synthesis and phase formation of high entropy alloys Covers design of HEAs based on thermodynamic criteria Discusses the structural and functional properties of HEAs Provides a comparison of HEAs with other multicomponent systems like intermetallics and bulk metallic glasses

High-Entropy Alloys, Second Edition provides a complete review of the current state of the field of high entropy alloys (HEA). Building upon the first edition, this fully updated release includes new theoretical understandings of these materials, highlighting recent developments on modeling and new classes of HEAs, such as Eutectic HEAs and Dual phase HEAs. Due to their unique properties, high entropy alloys have attracted considerable attention from both academics and technologists. This book presents the fundamental knowledge, the spectrum of various alloy systems and their characteristics, key focus areas, and the future scope of the field in terms of research and technological applications.

Provides an up-to-date, comprehensive understanding on the current status of HEAs in terms of theoretical understanding and modeling efforts Gives a complete idea on alloy design criteria of various classes of HEAs developed so far Discusses the microstructure property correlations in HEAs in terms of structural and functional properties Presents a comparison of HEAs with other multicomponent systems, like intermetallics and bulk metallic glasses

High Entropy Materials: Fundamentals and Potential Applications covers the fundamental science of high entropy materials (HEMs) and advances in the development of various structural and functional HEMs: topics covered include strength and ductility combination; hydrogen embrittlement resistance; shape memory properties; fatigue properties as well as detailed reviews of high-entropy superalloys; refractory high entropy alloys; ferroelectric high entropy oxides; nanocrystal library for catalytic applications; water splitting for hydrogen production; thermoelectric properties; lithium and sodium batteries; high-entropy polymers; high-entropy coatings for elevated temperatures and wear resistance; and AI-based approaches to explore the high entropy materials composition space. The book is written by international experts in the field including the director and principal investigators of the High Entropy Materials Center in Taiwan: the first research center dedicated to the development of HEMsCovers the most recent research on the fundamental science of high entropy materialsIncludes design methods for high entropy materials, including simulations and AI-based approachesIncludes developments in high entropy materials for structural and functional applicationsReviews the use of high entropy coatings for wear and oxidation resistant applications

This book provides a systematic and comprehensive description of high-entropy alloys (HEAs). The book also contains computational modeling in tackling HEAs, which help elucidate the formation mechanisms and properties of HEAs from various length and time scales.