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Modeling Of Ni Cr Mo Based Alloys
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Book Synopsis Modeling of Ni-Cr-Mo Based Alloys by :
Download or read book Modeling of Ni-Cr-Mo Based Alloys written by and published by . This book was released on 2006 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: The CALPHAD approach is applied to kinetic studies of phase transformations and aging of prototypes of Ni-Cr-Mo-based alloys selected for waste disposal canisters in the Yucca Mountain Project (YMP). Based on a previous study on alloy stability for several candidate alloys, the thermodynamic driving forces together with a newly developed mobility database have been used to analyze diffusion-controlled transformations in these Ni-based alloys. Results on precipitation of the Ni2Cr-ordered phase in Ni-Cr and Ni-Cr-Mo alloys, and of the complex P- and [delta]-phases in a surrogate of Alloy 22 are presented, and the output from the modeling are compared with experimental data on aging.
Book Synopsis Welding Metallurgy and Weldability of Nickel-Base Alloys by : John C. Lippold
Download or read book Welding Metallurgy and Weldability of Nickel-Base Alloys written by John C. Lippold and published by John Wiley & Sons. This book was released on 2011-09-20 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most up-to-date coverage of welding metallurgy aspects and weldability issues associated with Ni-base alloys Welding Metallurgy and Weldability of Nickel-Base Alloys describes the fundamental metallurgical principles that control the microstructure and properties of welded Ni-base alloys. It serves as a practical how-to guide that enables engineers to select the proper alloys, filler metals, heat treatments, and welding conditions to ensure that failures are avoided during fabrication and service. Chapter coverage includes: Alloying additions, phase diagrams, and phase stability Solid-solution strengthened Ni-base alloys Precipitation strengthened Ni-base alloys Oxide dispersion strengthened alloys and nickel aluminides Repair welding of Ni-base alloys Dissimilar welding Weldability testing High-chromium alloys used in nuclear power applications With its excellent balance between the fundamentals and practical problem solving, the book serves as an ideal reference for scientists, engineers, and technicians, as well as a textbook for undergraduate and graduate courses in welding metallurgy.
Book Synopsis CALPHAD (Calculation of Phase Diagrams): A Comprehensive Guide by : N. Saunders
Download or read book CALPHAD (Calculation of Phase Diagrams): A Comprehensive Guide written by N. Saunders and published by Elsevier. This book was released on 1998-06-09 with total page 497 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph acts as a benchmark to current achievements in the field of Computer Coupling of Phase Diagrams and Thermochemistry, often called CALPHAD which is an acronym for Computer CALculation of PHAse Diagrams. It also acts as a guide to both the basic background of the subject area and the cutting edge of the topic, combining comprehensive discussions of the underlying physical principles of the CALPHAD method with detailed descriptions of their application to real complex multi-component materials. Approaches which combine both thermodynamic and kinetic models to interpret non-equilibrium phase transformations are also reviewed.
Book Synopsis Computer Calculation of Phase Diagrams with Special Reference to Refractory Metals by : Larry Kaufman
Download or read book Computer Calculation of Phase Diagrams with Special Reference to Refractory Metals written by Larry Kaufman and published by . This book was released on 1970 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical Modelling and Simulation of Metal Processing by : Christof Sommitsch
Download or read book Numerical Modelling and Simulation of Metal Processing written by Christof Sommitsch and published by MDPI. This book was released on 2021-08-16 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with metal processing and its numerical modelling and simulation. In total, 21 papers from different distinguished authors have been compiled in this area. Various processes are addressed, including solidification, TIG welding, additive manufacturing, hot and cold rolling, deep drawing, pipe deformation, and galvanizing. Material models are developed at different length scales from atomistic simulation to finite element analysis in order to describe the evolution and behavior of materials during thermal and thermomechanical treatment. Materials under consideration are carbon, Q&T, DP, and stainless steels; ductile iron; and aluminum, nickel-based, and titanium alloys. The developed models and simulations shall help to predict structure evolution, damage, and service behavior of advanced materials.
Download or read book Alloy 625 written by Jung Bahadur Singh and published by Springer Nature. This book was released on 2022-06-29 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives a brief history of the development of Alloy 625 and a detailed account of its physical, mechanical, and corrosion properties. It also addresses different types of microstructural changes the Alloy 625 undergoes at intermediate temperatures; provides details of properties deterioration due to such microstructural changes; assesses the alloy damage during the in-service inspection of plants; and provides criteria for the damage evaluation for various destructive and non-destructive testing. It combines the industrial data and literature together in one place for damage assessment of service exposed Alloy 625 components. This book serves as a guide to practicing engineers in the industry interested in the use of Alloy 625 and in academia for students pursuing advanced courses in materials science. Alloy 625 is a versatile nickel-chromium-molybdenum alloy known for its unique combination of high strength, excellent fabricability and weldability, and outstanding corrosion resistance.
Book Synopsis Introduction to Quasicrystals by : Marko Jaric
Download or read book Introduction to Quasicrystals written by Marko Jaric and published by Elsevier. This book was released on 2012-12-02 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aperiodicity and Order, Volume 1: Introduction to Quasicrystals deals with various aperiodic types of order in quasicrystals as well as the basic physics of quasicrystalline order and materials. Questions about the nature of order and the order of nature are addressed. This volume is comprised of six chapters; the first of which introduces the reader to icosahedral coordination in metallic crystals, with emphasis on the structural principles of metallic materials that are crystalline and may be expected to carry over to aperiodic materials. The discussion then turns to short- and long-range icosahedral orders in glass, crystals, and quasicrystals. The origins of icosahedral order are explained, and the physical properties of icosahedral materials are described. The chapters that follow focus on the metallurgy of quasicrystals, the crystallography of ideal icosahedral crystals, and stability and deformations in quasicrystalline solids. The book concludes with a discussion on symmetry, elasticity, and hydrodynamics in quasiperiodic structures. A pedagogical review of continuum elastic-hydrodynamic theory for quasicrystals and related structures is presented. This book is intended primarily as an introduction for new students in the field and as a reference for active researchers.
Book Synopsis Mechanical Behavior of Advanced Materials: Modeling and Simulation by : Qihong Fang
Download or read book Mechanical Behavior of Advanced Materials: Modeling and Simulation written by Qihong Fang and published by CRC Press. This book was released on 2023-11-30 with total page 339 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the recent developments in the field of advanced materials, there exists a need for a systematic summary and detailed introduction of the modeling and simulation methods for these materials. This book provides a comprehensive description of the mechanical behavior of advanced materials using modeling and simulation. It includes materials such as high-entropy alloys, high-entropy amorphous alloys, nickel-based superalloys, light alloys, electrode materials, and nanostructured reinforced composites. Reviews the performance and application of a variety of advanced materials and provides the detailed theoretical modeling and simulation of mechanical properties Covers the topics of deformation, fracture, diffusion, and fatigue Features worked examples and exercises that help readers test their understanding This book is aimed at researchers and advanced students in solid mechanics, material science, engineering, material chemistry, and those studying the mechanics of materials.
Book Synopsis The Effect of Alloy Composition on the Localized Corrosion Behavior of Ni-Cr-Mo Alloys by : Fariaty Wong
Download or read book The Effect of Alloy Composition on the Localized Corrosion Behavior of Ni-Cr-Mo Alloys written by Fariaty Wong and published by . This book was released on 2009 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pitting corrosion is commonly preceded by the occurrence of metastable pitting. Thus, one can better understand the pitting process of an alloy through its metastable pitting behavior. Rigorous metastable pitting study was conducted on Ni-Cr-Mo alloys with Cr content varying from 20 to 29 wt.% and Mo content varying from 12 to 25 wt.%. Potentiostatic experiments were performed in 90°C of 0.5M NaCl to promote the metastable pitting incidence. Analysis was done on the potentiostatic data to better characterize the metastable pitting behavior of the Ni-Cr-Mo alloys. It was observed that a higher Mo content in the Ni-based alloy is responsible for the lower peak current values and slowing down the growth rates of the faster growing pits. The Cr content seems to impact the repassivation rates of the metastable pits where higher Cr content increases the repassivation rates.
Book Synopsis Proceedings of the 18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors by : John H. Jackson
Download or read book Proceedings of the 18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors written by John H. Jackson and published by Springer. This book was released on 2018-12-20 with total page 2532 pages. Available in PDF, EPUB and Kindle. Book excerpt: This two-volume set represents a collection of papers presented at the 18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors. The purpose of this conference series is to foster an exchange of ideas about problems and their remedies in water-cooled nuclear power plants of today and the future. Contributions cover problems facing nickel-based alloys, stainless steels, pressure vessel and piping steels, zirconium alloys, and other alloys in water environments of relevance. Components covered include pressure boundary components, reactor vessels and internals, steam generators, fuel cladding, irradiated components, fuel storage containers, and balance of plant components and systems.
Book Synopsis First Principles-based Thermokinetic Modeling of Steels and Ni Alloys for Nuclear Applications by :
Download or read book First Principles-based Thermokinetic Modeling of Steels and Ni Alloys for Nuclear Applications written by and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this dissertation was to develop multiscale modeling frameworks for describing modes of thermal and radiation-induced degradation in steels and Ni alloys for nuclear applications. The development of these models was performed according to the following general method: first, electronic structure calculations were performed to obtain key atomistic energies and insights. These calculations then formed a foundation for atomistic simulations and continuum level models used to describe microstructural processes of interest. The results of these models were compared to experimental measurements, and used to identify the fundamental mechanisms underlying the observed material phenomena. This approach was applied to three distinct topics. The first is the theory and prediction of radiation induced segregation in the Ni-Cr and Fe-Cr systems. In this subproject, the modeling effort yielded an important new understanding of the role of interstitial diffusion in radiation induced segregation. The effects of defect annihilation kinetics at grain boundaries were also examined. The second topic was the kinetics of the disorder-order phase transformation in Ni-Cr alloys. This project resulted in a physics-based model for describing the phase transformation that shows good agreement with both atomistic simulations and experimental measurements. The predictions of this model indicate that this phase transformation may be of serious concern in Ni-Cr alloys near the Ni2Cr stoichiometry during very long service lifetimes. Finally, the third topic was the evolution of oxide nanoprecipitates in nanostructured ferritic alloys. The key results of this effort were a better understanding of nanoprecipitate coarsening mechanisms and the effects of alloy composition on nanoprecipitate size distribution. The predictions of this model also indicate that the nanoprecipitates in nanostructured ferritic alloys should be thermally stable for as long as 80 years at proposed operating temperatures. In all three projects the first principles-based foundation provided by the electronic structure calculations allowed the resulting models to go beyond empirical fitting, and to provide understanding of the mechanisms underlying the microstructural processes of interest.
Book Synopsis Alloy Design and Characterization of γ′ Strengthened Nickel-based Superalloys for Additive Manufacturing by : Jinghao Xu
Download or read book Alloy Design and Characterization of γ′ Strengthened Nickel-based Superalloys for Additive Manufacturing written by Jinghao Xu and published by Linköping University Electronic Press. This book was released on 2021-01-28 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nickel-based superalloys, an alloy system bases on nickel as the matrix element with the addition of up to 10 more alloying elements including chromium, aluminum, cobalt, tungsten, molybdenum, titanium, and so on. Through the development and improvement of nickel-based superalloys in the past century, they are well proved to show excellent performance at the elevated service temperature. Owing to the combination of extraordinary high-temperature mechanical properties, such as monotonic and cyclic deformation resistance, fatigue crack propagation resistance; and high-temperature chemical properties, such as corrosion and oxidation resistance, phase stability, nickel-based superalloys are widely used in the critical hot-section components in aerospace and energy generation industries. The success of nickel-based superalloy systems attributes to both the well-tailored microstructures with the assistance of carefully doped alloying elements, and the intently developed manufacturing processes. The microstructure of the modern nickel-based superalloys consists of a two-phase configuration: the intermetallic precipitates (Ni,Co)3(Al,Ti,Ta) known as γ′ phase dispersed into the austenite γ matrix, which is firstly introduced in the 1940s. The recently developed additive manufacturing (AM) techniques, acting as the disruptive manufacturing process, offers a new avenue for producing the nickel-based superalloy components with complicated geometries. However, γ′ strengthened nickel-based superalloys always suffer from the micro-cracking during the AM process, which is barely eliminated by the process optimization. On this basis, the new compositions of γ′ strengthened nickel-based superalloy adapted to the AM process are of great interest and significance. This study sought to design novel γ′ strengthened nickel-based superalloys readily for AM process with limited cracking susceptibility, based on the understanding of the cracking mechanisms. A two-parameter model is developed to predict the additive manufacturability for any given composition of a nickel-based superalloy. One materials index is derived from the comparison of the deformation-resistant capacity between dendritic and interdendritic regions, while another index is derived from the difference of heat resistant capacity of these two spaces. By plotting the additive manufacturability diagram, the superalloys family can be categorized into the easy-to-weld, fairly-weldable, and non-weldable regime with the good agreement of the existed knowledge. To design a novel superalloy, a Cr-Co-Mo-W-Al-Ti-Ta-Nb-Fe-Ni alloy family is proposed containing 921,600 composition recipes in total. Through the examination of additive manufacturability, undesired phase formation propensity, and the precipitation fraction, one composition of superalloy, MAD542, out of the 921,600 candidates is selected. Validation of additive manufacturability of MAD542 is carried out by laser powder bed fusion (LPBF). By optimizing the LPBF process parameters, the crack-free MAD542 part is achieved. In addition, the MAD542 superalloy shows great resistance to the post-processing treatment-induced cracking. During the post-processing treatment, extensive annealing twins are promoted to achieve the recrystallization microstructure, ensuring the rapid reduction of stored energy. After ageing treatment, up to 60-65% volume fraction of γ′ precipitates are developed, indicating the huge potential of γ′ formation. Examined by the high-temperature slow strain rate tensile and constant loading creep testing, the MAD542 superalloy shows superior strength than the LPBF processed and hot isostatic pressed plus heat-treated IN738LC superalloy. While the low ductility of MAD542 is existed, which is expected to be improved by modifying the post-processing treatment scenarios and by the adjusting building direction in the following stages of the Ph.D. research. MAD542 superalloy so far shows both good additive manufacturability and mechanical potentials. Additionally, the results in this study will contribute to a novel paradigm for alloy design and encourage more γ′-strengthened nickel-based superalloys tailored for AM processes in the future.
Book Synopsis The Microstructure of Superalloys by : Madeleine Durand-Charre
Download or read book The Microstructure of Superalloys written by Madeleine Durand-Charre and published by Routledge. This book was released on 2017-11-22 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents all the main aspects of the microstructure of nickel-base superalloys, and includes micrographs chosen from among a large range of commercial and academic alloys, from the as-cast product to in-situ components, worn from in-service use. Including more than 100 illustrations, the text explains all the transformation mechanisms involved in the origination (creation) of microstructures during solidification or heat treatments (crystallization paths, segregation, crystal orientation, precipitation, TCP, coarsening and rafting, etc.). It includes up-to-date information and data such as phase diagrams, crystallographic structures, and relationships with functional properties. Nearly 300 references provide a key to further investigation.
Book Synopsis Basic Modeling and Theory of Creep of Metallic Materials by : Rolf Sandström
Download or read book Basic Modeling and Theory of Creep of Metallic Materials written by Rolf Sandström and published by Springer Nature. This book was released on 2024-02-10 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book features an in-depth exploration of the intricate creep behavior exhibited by metallic materials, with a specific focus on elucidating the underlying mechanical properties governing their response at elevated temperatures, particularly in the context of polycrystalline alloys. Traditional approaches to characterizing mechanical properties have historically relied upon empirical models replete with numerous adjustable parameters, painstakingly tuned to match experimental data. While these methods offer practical simplicity, they often yield outcomes that defy meaningful extrapolation and application to novel systems, invariably necessitating the recalibration of parameters afresh. In stark contrast, this book compiles a compendium of models sourced from the scientific literature, meticulously crafted through ab initio methodologies rooted in fundamental physical principles. Notably, these models stand apart by their conspicuous absence of adjustable parameters. This pioneering effort is envisioned as a groundbreaking initiative, marking the first of its kind in the field. The resulting models, bereft of arbitrary tuning, offer a level of predictability hitherto unattained. Notably, they provide a secure foundation for ascertaining operational mechanisms, contributing significantly to enhancing our understanding of material behavior in high-temperature environments. This open access book is a valuable resource for researchers and seasoned students engaged in the study of creep phenomena in metallic materials. Readers will find a comprehensive exposition of these novel, parameter-free models, facilitating a deeper comprehension of the intricate mechanics governing material deformation at elevated temperatures.
Book Synopsis Atom Probe Microscopy by : Baptiste Gault
Download or read book Atom Probe Microscopy written by Baptiste Gault and published by Springer Science & Business Media. This book was released on 2012-08-27 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atom probe microscopy enables the characterization of materials structure and chemistry in three dimensions with near-atomic resolution. This uniquely powerful technique has been subject to major instrumental advances over the last decade with the development of wide-field-of-view detectors and pulsed-laser-assisted evaporation that have significantly enhanced the instrument’s capabilities. The field is flourishing, and atom probe microscopy is being embraced as a mainstream characterization technique. This book covers all facets of atom probe microscopy—including field ion microscopy, field desorption microscopy and a strong emphasis on atom probe tomography. Atom Probe Microscopy is aimed at researchers of all experience levels. It will provide the beginner with the theoretical background and practical information necessary to investigate how materials work using atom probe microscopy techniques. This includes detailed explanations of the fundamentals and the instrumentation, contemporary specimen preparation techniques, experimental details, and an overview of the results that can be obtained. The book emphasizes processes for assessing data quality, and the proper implementation of advanced data mining algorithms. Those more experienced in the technique will benefit from the book as a single comprehensive source of indispensable reference information, tables and techniques. Both beginner and expert will value the way that Atom Probe Microscopy is set out in the context of materials science and engineering, and includes references to key recent research outcomes.
Book Synopsis Progress in the Modeling of NiAl-Based Alloys Using the BFS Method by :
Download or read book Progress in the Modeling of NiAl-Based Alloys Using the BFS Method written by and published by . This book was released on 1997 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Corrosion Tests and Standards by : Robert Baboian
Download or read book Corrosion Tests and Standards written by Robert Baboian and published by ASTM International. This book was released on 2005 with total page 887 pages. Available in PDF, EPUB and Kindle. Book excerpt:
