Martensitic Transformations Induced by Plastic Deformation in the Fe-ni-cr-c System

Martensitic Transformations Induced by Plastic Deformation in the Fe-ni-cr-c System PDF Author: F. LECROISEY
Publisher:
ISBN:
Category :
Languages : en
Pages : 10

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Martensitic Transformations Induced by Plastic Deformation in the Fe-ni-cr-c System

Martensitic Transformations Induced by Plastic Deformation in the Fe-ni-cr-c System PDF Author: F. LECROISEY
Publisher:
ISBN:
Category :
Languages : en
Pages : 10

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Austenitic Steels at Low Temperatures

Austenitic Steels at Low Temperatures PDF Author: T. Horiuchi
Publisher: Springer Science & Business Media
ISBN: 1461337305
Category : Technology & Engineering
Languages : en
Pages : 384

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Book Description
The need for alternate energy sources has led to the develop ment of prototype fusion and MHD reactors. Both possible energy systems in current designs usually require the use of magnetic fields for plasma confinement and concentration. For the creation and maintenance of large 5 to 15 tesla magnetic fields, supercon ducting magnets appear more economical. But the high magnetic fields create large forces, and the complexities of the conceptual reactors create severe space restrictions. The combination of re quirements, plus the desire to keep construction costs at a mini mum, has created a need for stronger structural alloys for service at liquid helium temperature (4 K). The complexity of the required structures requires that these alloys be weldable. Furthermore, since the plasma is influenced by magnetic fields and since magnet ic forces from the use of ferromagnetic materials in many configur ations may be additive, the best structural alloy for most applica tions should be nonmagnetic. These requirements have led to consideration of higher strength austenitic steels. Strength increases at low temperatures are achieved by the addition of nitrogen. The stability of the austenitic structure is retained by adding manganese instead of nickel, which is more expensive. Research to develop these higher strength austenitic steels is in process, primarily in Japan and the United States.

Martensitic Transformation

Martensitic Transformation PDF Author: Zenji Nishiyama
Publisher: Elsevier
ISBN: 0323148816
Category : Technology & Engineering
Languages : en
Pages : 480

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Book Description
Martensitic Transformation examines martensitic transformation based on the known crystallographical data. Topics covered range from the crystallography of martensite to the transformation temperature and rate of martensite formation. The conditions for martensite formation and stabilization of austenite are also discussed, along with the crystallographic theory of martensitic transformations. Comprised of six chapters, this book begins with an introduction to martensite and martensitic transformation, with emphasis on the basic properties of martensite in steels such as carbon steels. The next two chapters deal with the crystallography of martensite and discuss the martensitic transformation behavior of the second-order transition; lattice imperfections in martensite; and close-packed layer structures of martensites produced from ? phase in noble-metal-base alloys. Thermodynamical problems and kinetics are also analysed, together with conditions for the nucleation of martensite and problems concerning stabilization of austenite. The last chapter discusses the theory of the mechanism underlying martensitic transformation. This monograph will be of interest to metallurgists and materials scientists.

Effect of Plastic Deformation on the Stabilization of Martensite in an Fe-Ni Alloy

Effect of Plastic Deformation on the Stabilization of Martensite in an Fe-Ni Alloy PDF Author: Eileen Jeannette Bryk
Publisher:
ISBN:
Category : Austenite
Languages : en
Pages : 168

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Transformations Selected Works of G.B. Olson on Materials, Microstrucutre, and Design

Transformations Selected Works of G.B. Olson on Materials, Microstrucutre, and Design PDF Author: C.E. Campbell
Publisher: ASM International
ISBN: 1627081380
Category : Technology & Engineering
Languages : en
Pages : 569

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Book Description
ASM International and The Minerals, Metals and Materials Society (TMS) have collaborated to present a collection of the selected works of Dr. Greg B. Olson in honor of his 70th birthday in 2017. This collection highlights his influential contributions to the understanding of martensite transformations and the development and application of a systems design approach to materials. Part I: Martensite, with an Introduction by Sir Harry Bhadeshia, emphasizes Dr. Olson's work to develop a dislocation theory for martensite transformations, to improve the understanding of the statistical nature of martensite nucleation, and to expand use of quantitative microscopy to characterize phase transformations. Part II: Materials Design, with an Introduction by Dr. Charles Kuehmann, focuses on the application of a systems design approach to materials and the development of integrated computational design curriculum for undergraduate education. Part II includes several examples of the systems design approach to a variety of applications. The papers chosen for this collection were selected by the editors with input from Dr. Olson.

Mechanics of Solids with Phase Changes

Mechanics of Solids with Phase Changes PDF Author: M. Berveiller
Publisher: Springer
ISBN: 3709126606
Category : Technology & Engineering
Languages : en
Pages : 320

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Book Description
The book is mainly devoted to the thermomechanical behavior of materials during solid-solid phase transformations. The physical mechanisms including diffusion, martensitic transformation and plasticity are described from material science point of view. The global behaviour is deduced from methods of classical as well as irreversible thermodynamics and continuum and micro mechanics. Mainly metals, both non ferrous and ferrous alloys but also geological problems are dealt with. Special attention is given to transformation induced plasticity and shape memory alloys. Three chapters are concerned with practical applications (heat treatment, smart structures, residual stresses).

Phase Transformations in Steels

Phase Transformations in Steels PDF Author: Elena Pereloma
Publisher: Elsevier
ISBN: 0857096117
Category : Technology & Engineering
Languages : en
Pages : 673

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Book Description
The processing-microstructure-property relationships in steels continue to present challenges to researchers because of the complexity of phase transformation reactions and the wide spectrum of microstructures and properties achievable. This major two-volume work summarises the current state of research on phase transformations in steels and its implications for the emergence of new steels with enhanced engineering properties.Volume 2 reviews current research on diffusionless transformations and phase transformations in high strength steels, as well as advances in modelling and analytical techniques which underpin this research. Chapters in part one discuss the crystallography and kinetics of martensite transformations, the morphology, substructure and tempering of martensite as well as shape memory in ferrous alloys. Part two summarises research on phase transformations in high strength low alloy (HSLA) steels, transformation induced plasticity (TRIP)-assisted multiphase steels, quenched and partitioned steels, advanced nanostructured bainitic steels, high manganese twinning induced plasticity (TWIP) and maraging steels. The final two parts of the book review advances in modelling and the use of advanced analytical techniques to improve our understanding of phase transformations in steels.With its distinguished editors and distinguished international team of contributors, the two volumes of Phase transformations in steels is a standard reference for all those researching the properties of steel and developing new steels in such areas as automotive engineering, oil and gas and energy production. - Alongside its companion volume, this major two-volume work summarises the current state of research on phase transformations in steels - Reviews research on diffusionless transformations and phase transformations in high strength steels - Examines advances in modelling and the use of advanced analytical techniques to improve understanding of phase transformations in steels

Maraging Steels

Maraging Steels PDF Author: W Sha
Publisher: Elsevier
ISBN: 184569693X
Category : Technology & Engineering
Languages : en
Pages : 216

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Book Description
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

Plastic Deformation and Martensitic Transformation in Iron Alloys

Plastic Deformation and Martensitic Transformation in Iron Alloys PDF Author: John F. Breedis
Publisher:
ISBN:
Category :
Languages : en
Pages : 85

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Book Description
An electron transmission study has been made of the martensite transformation in a series of stainless steels. The influence of chemical composition on martensite morphology has been investigated and the composition ranges which transform to lath, surface and plate martensite determined. Using polycrystalline samples of two compositions which transform to lath martensite, an investigation was conducted into the influence of prior plastic deformation on martensite formation. This is of course a contribution to the fundamental understanding of the ausforming process. A further investigation in this area was an examination of the transformation which occurs during plastic deformation at temperatures approaching the M sub s. These experiments were performed on single crystals of the composition Fe-17Cr-16Ni. Finally, transmission studies were carried out to determine the processes occuring during reversion of an Fe-16Cr-12Ni alloy heated in the temperature range 500 to 900 C. (Author).

Austenitic Stainless Steels

Austenitic Stainless Steels PDF Author: Wojciech Borek
Publisher: BoD – Books on Demand
ISBN: 9535137018
Category : Technology & Engineering
Languages : en
Pages : 219

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Book Description
Stainless steel is still one of the fastest growing materials. Today, the austenitic stainless steel with the classic composition of 18% Cr and 8% Ni (grade 304L) is still the most widely used by far in the world. The unique characteristic of stainless steel arises from three main factors. The versatility results from high corrosion resistance, excellent low- and high-temperature properties, high toughness, formability, and weldability. The long life of stainless steels has been proven in service in a wide range of environments, together with low maintenance costs compared to other highly alloyed metallic materials. The retained value of stainless steel results from the high intrinsic value and easy recycling. Stainless steel, especially of austenitic microstructure, plays a crucial role in achieving sustainable development nowadays, so it is also important for further generations.