Download or read book Kinetics and Microstructural Evolutions During the Tempering of Martensitic and Nano bainitic Low Alloyed Steel written by Steve Gaudez and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nano-bainitic steels represent a new class of alloys, whose microstructure consists of nanostructured bainitic ferrite formed at low temperature with a high amount of retained austenite leading to a high ductility and high tensile strength of the steel. Formation of nano-bainite has been studied thoroughly in literature as well as tempering of nano-bainitic steels. More recently it has been shown that adding carbide forming elements such as V and Mo increases the resistance to softening and hence the mechanical properties of nano-bainite at moderate temperature. Investigating the secondary carbide precipitation inside a nano-bainitic microstructure is thus necessary to optimize the thermal treatments for this promising new class of steels. Three initial microstructures of the same steel composition are investigated: martensite, martensite + retained austenite and nano-bainite. Studying the more conventional case of martensite has served as a basis to better understand the microstructure evolutions inside the nano-bainitic steel. The microstructural evolutions during the tempering were followed by complementary experimental techniques including dilatometry, in situ high energy synchrotron X-ray diffraction (HEXRD), conventional and high resolution TEM. The sequence of carbides precipitation and dissolution (transition-iron-carbides, cementite, and alloyed carbides) both during heating and holding is shown similar for the three initial microstructures. The kinetics are similar as well as cementite chemical composition and size distributions of cementite and alloyed carbides. It has been shown too that the three microstructures present a high retained austenite stability. Moreover, the analyses of the lattice parameters evolutions all along the tempering treatment associated with carbon mass balances have allowed to better understand the carbon distributions between carbides and matrix phases. The nucleation and growth model from a previous work was upgraded to take into account secondary precipitation and different new features (e.g. para-equilibrium interface condition for first stage of cementite growth, etc.). This model predicts the kinetics of precipitation, the particle densities and size distributions as well as matrix and carbides mean composition for different tempering conditions. Apart from the comparison with the experimental results that is discussed, it allowed to interpret the similar tempering behaviour for the three initial microstructures.

Download or read book Bainite and Martensite written by Carlos Garcia-Mateo and published by MDPI. This book was released on 2020-05-27 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: The microstructures of both martensite and bainite, although sharing some common features, depict a plethora of subtle differences that made them unique when studied in further detail. Tailoring the final properties of a microstructure based on one or the other as well as in combination with others and exploring more sophisticated concepts, such as Q&P and nanostructured bainite, are the topics which are the focus of research around the world. In understanding the key microstructural parameters controlling the final properties as well as definition of adequate process parameters to attain the desired microstructures requires that a proper understanding of the mechanism ruling their transformation and a detailed characterization first be acheived. The development of new and powerful scientific techniques and equipment (EBSD, APT, HRTEM, etc.) allow us to gain fundamental insights that help to establish some of the principles by which those microstructures are known. The developments accompanying such findings lead to further developments and intensive research providing the required metallurgical support.

Download or read book Encyclopedia of Iron Steel and Their Alloys Online Version written by Rafael Colás and published by CRC Press. This book was released on 2016-01-06 with total page 3918 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first of many important works featured in CRC Press’ Metals and Alloys Encyclopedia Collection, the Encyclopedia of Iron, Steel, and Their Alloys covers all the fundamental, theoretical, and application-related aspects of the metallurgical science, engineering, and technology of iron, steel, and their alloys. This Five-Volume Set addresses topics such as extractive metallurgy, powder metallurgy and processing, physical metallurgy, production engineering, corrosion engineering, thermal processing, metalworking, welding, iron- and steelmaking, heat treating, rolling, casting, hot and cold forming, surface finishing and coating, crystallography, metallography, computational metallurgy, metal-matrix composites, intermetallics, nano- and micro-structured metals and alloys, nano- and micro-alloying effects, special steels, and mining. A valuable reference for materials scientists and engineers, chemists, manufacturers, miners, researchers, and students, this must-have encyclopedia: Provides extensive coverage of properties and recommended practices Includes a wealth of helpful charts, nomograms, and figures Contains cross referencing for quick and easy search Each entry is written by a subject-matter expert and reviewed by an international panel of renowned researchers from academia, government, and industry. Also Available Online This Taylor & Francis encyclopedia is also available through online subscription, offering a variety of extra benefits for researchers, students, and librarians, including: Citation tracking and alerts Active reference linking Saved searches and marked lists HTML and PDF format options Contact Taylor and Francis for more information or to inquire about subscription options and print/online combination packages. US: (Tel) 1.888.318.2367; (E-mail) [email protected] International: (Tel) +44 (0) 20 7017 6062; (E-mail) [email protected]

Download or read book Bainite in Steels written by H.K.D.H. Bhadeshia and published by CRC Press. This book was released on 2019-04-15 with total page 910 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the third edition of the book, much expanded to include and incorporate important developments in the subject over the last fifteen years. The book represents a comprehensive treatise on all aspects of the bainite transformation, from the choreography of atoms during the phase change to length scales that are typical of engineering applications. The alloy design that emerges from this explains the role of solute additions, and the pernicious effects of impurities such as hydrogen. The picture presented is self-consistent and therefore is able to guide the reader on the exploitation of theory to the design of some of the most exciting steels, including the world’s first bulk nanostructured metal.

Download or read book Bainite in Steels written by Harshad Kumar Dharamshi Hansraj Bhadeshia and published by Maney Publishing. This book was released on 2001 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of this modern classic encompasses the latest research, which sees bainitic alloys at the forefront of a new wave of "designed" steels. Contents include: Nomenclature; Introduction; Bainitic Ferrite; Carbide Precipitation; Tempering of Bainite; Thermodynamics; Kinetics; Upper and Lower Bainite; Stress and Strain Effects; Reverse Transformation from Bainite to Austenite; Acicular Ferrite; Other Morphologies of Bainite; Mechanical Properties; Modern Bainitic Alloys;Other Aspects; The Transformation of Steel.

Download or read book Bainite in Steels written by H.K.D.H. Bhadeshia and published by CRC Press. This book was released on 2019-04-15 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the third edition of the book, much expanded to include and incorporate important developments in the subject over the last fifteen years. The book represents a comprehensive treatise on all aspects of the bainite transformation, from the choreography of atoms during the phase change to length scales that are typical of engineering applications. The alloy design that emerges from this explains the role of solute additions, and the pernicious effects of impurities such as hydrogen. The picture presented is self-consistent and therefore is able to guide the reader on the exploitation of theory to the design of some of the most exciting steels, including the world’s first bulk nanostructured metal.

Download or read book A Metallographic Study on Tungsten Steels written by Axel Hultgren and published by . This book was released on 1920 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Determination of Phase Transformation Kinetics when Tempering Martensitic Hardened Low Alloy Steels written by and published by . This book was released on 1995 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Maraging Steels written by W Sha and published by Elsevier. This book was released on 2009-10-26 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: Maraging steels are high-strength steels combined with good toughness. They are used particularly in aerospace and tooling applications. Maraging refers to the ageing of martensite, a hard microstructure commonly found in steels.Maraging steels: modelling of microstructure, properties and applications covers the following topics: Introduction to maraging steels; Microstructure of maraging steels; Mechanical properties of maraging steels; Thermodynamic calculations for quantifying the phase fraction and element partition in maraging systems and precipitation hardening steels; Quantification of phase transformation kinetics in maraging steels; Quantification of age hardening in maraging steels; Maraging steels and overageing; Precipitation hardening stainless steel; Applications of artificial neural network on modelling maraging steel properties.With its distinguished authors, Maraging steels: modelling of microstructure, properties and applications is a standard reference for industry and researchers concerned with maraging steels and modelling as well as users of maraging steels in the aerospace and tooling sectors. The book includes both conventional maraging steels and precipitation hardened (PH) stainless steels. Provides an overview of maraging steels including microstructure and mechanical properties Reviews thermodynamic calculations for quantifying the phase fraction and element partition in maraging steels Includes chapters on the quantification of phase transformation kinetics and age hardening in maraging steels

Download or read book Processing Structure Property Relationships in Metals written by Alessandra Varone and published by MDPI. This book was released on 2019-11-04 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the industrial manufacturing of metals, the achievement of products featuring desired characteristics always requires the control of process parameters in order to obtain a suitable microstructure. The strict relationship among process parameters, microstructure, and mechanical properties is a matter of interest in different areas, such as foundry, plastic forming, sintering, welding, etc., and regards both well-established and innovative processes. Nowadays, circular economy and sustainable technological development are dominant paradigms and impose an optimized use of resources, a lower energetic impact of industrial processes and new tasks for materials and products. In this frame, this Special Issue covers a broad range of research works and contains research and review papers.

Download or read book Microscopy and Imaging Science written by A. Méndez-Vilas and published by . This book was released on 2017 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Microstructure and Transformation Kinetics in Bainitic Steels written by N.V. Luzginova and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Creep Resistant Steels written by Fujio Abe and published by Elsevier. This book was released on 2008-03-14 with total page 701 pages. Available in PDF, EPUB and Kindle. Book excerpt: Creep-resistant steels are widely used in the petroleum, chemical and power generation industries. Creep-resistant steels must be reliable over very long periods of time at high temperatures and in severe environments. Understanding and improving long-term creep strength is essential for safe operation of plant and equipment. This book provides an authoritative summary of key research in this important area.The first part of the book describes the specifications and manufacture of creep-resistant steels. Part two covers the behaviour of creep-resistant steels and methods for strengthening them. The final group of chapters analyses applications in such areas as turbines and nuclear reactors.With its distinguished editors and international team of contributors, Creep-resistant steels is a valuable reference for the power generation, petrochemical and other industries which use high strength steels at elevated temperatures. Describes the specifications and manufacture of creep-resistant steels Strengthening methods are discussed in detail Different applications are analysed including turbines and nuclear reactors

Download or read book HSLA Steels 2015 Microalloying 2015 Offshore Engineering Steels 2015 written by The Chinese Society for Metals and published by Springer. This book was released on 2017-03-22 with total page 1147 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a collection of papers presented at the joint conference of the 7th International Conference on High Strength Low Alloy Steels (HSLA Steels 2015), the International Conference on Microalloying 2015 (Microalloying 2015), and the International Conference on Offshore Engineering Steels 2015 (OES 2015). The papers focus on the exchange of the latest scientific and technological progresses on HSLA steels, microalloying steels, and offshore engineering steels over the past decades. The contributions are intended to strengthen cooperation between universities and research institutes, and iron and steel companies and users, and promote the further development in the fields all over the world.

Download or read book Steels written by Robert William Kerr Honeycombe and published by John Wiley & Sons. This book was released on 1996-02-12 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: The properties of steels depend critically on their microstructure. By examining the mechanical properties of steels in conjunction with microstructure, the first edition gave a clear description of the development and behavior of these materials - the very foundation of their widespread use. This new edition more explicitly links this theory with applications while retaining the style and purpose of its predecessor.

Download or read book Tempering Response of Mixed Martensitic bainitic Microstructures in Quench and Tempered Plate Steels written by Igor Eduardo Silva Vieira and published by . This book was released on 2018 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Steels Processing Structure and Performance Second Edition written by George Krauss and published by ASM International. This book was released on 2015-03-01 with total page 705 pages. Available in PDF, EPUB and Kindle. Book excerpt: George Krauss, University Emeritus Professor, Colorado School of Mines and author of the best-selling ASM book Steels: Processing, Structure, and Performance, discusses some of the important additions and updates to the new second edition.