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The Effects Of Heat Treatment And Isothermal Annealing At 1600f On The Microstructure Of A Nickel Base Heat Resistant Alloy
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Book Synopsis The Effects of Heat Treatment and Isothermal Annealing at 1600F on the Microstructure of a Nickel-base Heat Resistant Alloy by : Earle Arthur Ault
Download or read book The Effects of Heat Treatment and Isothermal Annealing at 1600F on the Microstructure of a Nickel-base Heat Resistant Alloy written by Earle Arthur Ault and published by . This book was released on 1968 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Thermal and Mechanical Treatments for Nickel and Some Nickel-base Alloys: Effects on Mechanical Properties by : Albert M. Hall
Download or read book Thermal and Mechanical Treatments for Nickel and Some Nickel-base Alloys: Effects on Mechanical Properties written by Albert M. Hall and published by . This book was released on 1972 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The Columbus Laboratories, Battelle Memorial Institute, originally prepared these reports in 1965 and later revised them, updating the information to include the latest technology through 1968. This report is one of a series pertaining to the fabricating of nickel, nickel-base, and cobalt-base alloys. This report deals with heat treating and working nickel and nickel-base alloys, and with the effects of these operations on the mechanical properties of the materials. The subjects covered are annealing, solution treating, stress relieving, stress equalizing, age hardening, hot working, cold working, combinations of working and heat treating (often referred to as thermomechanical treating), and properties of the materials at various temperatures. The equipment and procedures used in working the materials are discussed, along with the common problems that may be encountered and the precautions and corrective measures that are available."--Foreword.
Book Synopsis Masters Theses and Doctoral Dissertations in the Pure and Applied Sciences Accepted by Colleges and Universities of the United States by :
Download or read book Masters Theses and Doctoral Dissertations in the Pure and Applied Sciences Accepted by Colleges and Universities of the United States written by and published by . This book was released on 1968 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effects of Isothermal Deformation and Annealing on the Microstructure of Nickel-aluminum-bronze in Relation to the Friction Stir Process by : Brian K. Vazquez
Download or read book The Effects of Isothermal Deformation and Annealing on the Microstructure of Nickel-aluminum-bronze in Relation to the Friction Stir Process written by Brian K. Vazquez and published by . This book was released on 2003 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt: The FSP of Nickel Aluminum Bronze is a novel approach to enhance the microstructural properties of the material through a shear deformation process. This thesis examines the effect on microstructure of isothermal annealing and quenching of as-cast Nickel Aluminum Bronze and, furthermore, reports on investigation of the effects of isothermal hot rolling on microstructure of this material. Quantitative analysis of the microstructure constituents shows that heating to about 800oC results in the formation of beta by reversion of the eutectoid constituent alpha + kappaiii. Further heating in the range of 800- 1000oC results in an approximately linear decrease in the volume fraction of primary alpha and a corresponding increase in the volume fraction of beta transformation products. Isothermal rolling of NAB over this same temperature interval results in deformation of both phases and an elongated, banded distribution of alpha and beta transformation products in the middle of this interval. This suggests that local peak temperature in the stir zone of material that has been subjected to FSP may be estimated by microstructure analysis. The yield and ultimate strengths of NAB are increased and ductility is also increased when rolled material is compared to as-cast NAB. However, strength and hardness appear to be independent of prior rolling temperature.
Book Synopsis Thermal and Mechanical Treatments for Nickel and Some Nickel-base Alloys: Effects on Mechanical Properties by : A. M. Hall
Download or read book Thermal and Mechanical Treatments for Nickel and Some Nickel-base Alloys: Effects on Mechanical Properties written by A. M. Hall and published by . This book was released on 1972 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Influence of Heat Treatment on Microstructure and High-temperature Properties of a Nickel-base Precipitation-hardening Alloy by : R. F. Decker
Download or read book Influence of Heat Treatment on Microstructure and High-temperature Properties of a Nickel-base Precipitation-hardening Alloy written by R. F. Decker and published by . This book was released on 1958 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies have been made of the influence of various heat treatments on the rupture properties and microstructure of a 55Ni-20Cr-15Co-4Mo-3Ti-3Al alloy to provide more fundamental information on the relationships between structure and high-temperature properties in alloys of this type. The effects of variations in solution treatment, cooling rate after solution treatment, and aging treatment on the stress-rupture properties of the alloy at 1,600 degrees F and 25,000 psi have been measured and related to variations in the size and distribution of precipitates within the alloy and to residual rolling effects.
Book Synopsis Effect of a Supersolvus Heat Treatment on the Microstructure and Mechanical Properties of a Powder Metallurgy Processed Nickel-base Superalloy by : Darryl Slade Stolz
Download or read book Effect of a Supersolvus Heat Treatment on the Microstructure and Mechanical Properties of a Powder Metallurgy Processed Nickel-base Superalloy written by Darryl Slade Stolz and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This is thought to be due to the larger amounts of tertiary [gamma]ʹ present in the microstructure produced by the standard heat treatment. Finally, the standard heat treatment had longer creep lifetimes at the lowest test temperature. The alternate heat treatment performed better at the higher test temperatures. While the microstructure did not improve the fatigue properties across the board, the improved understanding of the microstructural evolution during heat treatment will help in developing new heat treatments that may provide the defect-tolerance that is necessary.
Book Synopsis The Effect of Thermal Treatment on Microstructure and Corrosion of Nickel Base Alloy 690 (UNS N0 6690) by : S. Santra
Download or read book The Effect of Thermal Treatment on Microstructure and Corrosion of Nickel Base Alloy 690 (UNS N0 6690) written by S. Santra and published by . This book was released on 2016 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alloy 690 in the thermally treated (TT) condition is an advanced steam generator tubing material. The effect of thermal ageing treatments on the intergranular corrosion (IGC) behavior of the alloy was probed. Isothermal ageing was carried out at 600, 700, and 800°C with varying ageing time. Morphology of the carbides was studied as a function of thermal treatment temperature and duration. The carbides morphology was observed to affect the IGC resistance. Grain boundaries devoid of carbides (solutionized condition) or with coarse carbide particles (formed at 800°C) enhanced IGC resistance, whereas dendritic fine carbides formed at lower ageing temperature yield inferior IGC resistance.
Book Synopsis On the Path-dependent Microstructure Evolution of an Advanced Powder Metallurgy Nickel-base Superalloy During Heat Treatment by : Nicholas J. Krutz
Download or read book On the Path-dependent Microstructure Evolution of an Advanced Powder Metallurgy Nickel-base Superalloy During Heat Treatment written by Nicholas J. Krutz and published by . This book was released on 2020 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt: The realization of advanced alloy compositions in service relies on a thorough understanding of metallurgical processing variables. Within this work, the gamma prime precipitation of an advanced powder metallurgy nickel-base superalloy during controlled cooling from supersolvus temperatures is compared to prior alloy generations using a complement of characterization and modeling approaches. The on-cooling precipitation of the alloy is studied and characterized to calibrate a multi-scale precipitation model. The proposed framework incorporates a computationally efficient addition to the mean-field modeling approach that increases its ability to model dynamic, multi-modal gamma prime burst events. The gamma prime size predicted by the model shows good agreement with experimental results. The precipitation calculation is applied to the element integration points of a continuum Finite Element heat conduction simulation, where the latent heat generated from the precipitation is accounted for. The results are compared to experimental findings and indicate potential use of the model for evaluating precipitation effects at multiple length scales. The lattice misfit evolution of two commercial PM nickel superalloys during cooling from supersolvus temperatures is also characterized, using in-situ synchrotron X-Ray Diffraction (XRD). The diffraction pattern deconvolution necessary for quantifying misfit was accomplished by combining observation of the superlattice peak intensities with thermodynamic modeling to quantify the intensity relationship between the overlapping phases. The misfit from the XRD measurements was compared to the Scanning Electron Microscopy observations of gamma prime particle shapes for a subset of the experimental conditions. The trend of measured misfit agreed with the microstructural characterization. Time-resolved observations of the on-cooling lattice parameter suggest that lower-temperature changes to the peak intensity characteristics coincide with low misfit magnitudes and a plausible connection to gamma prime burst events. Variation in cooling rate for this alloy and its predecessors shows a tendency for unstable precipitate growth with slower rates. To better understand the effect of precipitate morphology on defect interaction, a series of lab heat treatments of varied cooling rates were carried out and the mechanical response characterized. A phase-field based approach is used to simulate the growth instability of gamma prime precipitates during cooling and compared to post-mortem characterization using serial sectioning and reconstruction. Phase-field modeling is then used to interrogate the interaction of the particle morphology with planar dislocation evolution. It was determined that the incipient stages of particle evolution are dictated by interface growth instability more so than elastic anisotropy effects. Planar deformation in the presence of more evolved particles tended to promote Orowan looping while smaller particles with smaller gamma channel widths showed a tendency for stacking fault formation under the conditions characterized. To further understand precipitate morphology on properties, a stand-alone spectral-based microelasticity model is employed to predict the stress field around the particles. First order deformation assumptions are assessed to understand the effect of the microelastic stress field interacting with dislocations. By comparing the fields of varied precipitate morphologies, it is observed that the magnitudes and spatial distribution of the stress tensor components vary by morphology and may contribute to differences from a defect interaction standpoint.
Book Synopsis Effects of Precipitation Heat Treatment on Microstructure and Mechanical Performance of Nickel-based Superalloy Single Crystals by : Kyle J. Amberge
Download or read book Effects of Precipitation Heat Treatment on Microstructure and Mechanical Performance of Nickel-based Superalloy Single Crystals written by Kyle J. Amberge and published by . This book was released on 1992 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis RELATIONS BETWEEN MICROSTRUCTURE AND GREEP-RUPTURE PROPERTIES OF NICKEL-BASE ALLOYS AS REVEALED BY OVERTEMPERATURE EXPOSURES by : JOHN P. ROWE J.W. FREEMAR
Download or read book RELATIONS BETWEEN MICROSTRUCTURE AND GREEP-RUPTURE PROPERTIES OF NICKEL-BASE ALLOYS AS REVEALED BY OVERTEMPERATURE EXPOSURES written by JOHN P. ROWE J.W. FREEMAR and published by . This book was released on 1961 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dual Microstructure Heat Treatment of a Nickel-base Disk Alloy ... Nasa by : United States. National Aeronautics and Space Administration
Download or read book Dual Microstructure Heat Treatment of a Nickel-base Disk Alloy ... Nasa written by United States. National Aeronautics and Space Administration and published by . This book was released on 2003* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Heat Treatment on Microstructure, Hardness & Superelasticity of Severely Deformed NiTi /cby Omar Bahy El-Din Mortagy by : Omar Bahy El-Din Mortagy
Download or read book Effect of Heat Treatment on Microstructure, Hardness & Superelasticity of Severely Deformed NiTi /cby Omar Bahy El-Din Mortagy written by Omar Bahy El-Din Mortagy and published by . This book was released on 2006 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research investigates the effect of annealing on microstructure, superelasticity and hardness of a cold worked NiTi alloy (51 at%Ni).
Book Synopsis Continued Study of Advanced-temperature Nickel-base Alloys to Investigate Vanadium Additives by : John C. Freche
Download or read book Continued Study of Advanced-temperature Nickel-base Alloys to Investigate Vanadium Additives written by John C. Freche and published by . This book was released on 1960 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Preliminary Surface Treatment and Subsequent Isothermal Annealing on the Distribution of Boron in Brazed Joints in Creep Resisting Nickel Alloys by : I. G. Berzina
Download or read book Effect of Preliminary Surface Treatment and Subsequent Isothermal Annealing on the Distribution of Boron in Brazed Joints in Creep Resisting Nickel Alloys written by I. G. Berzina and published by . This book was released on 1989 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Observations of Internal Oxidation in Six Nickel-base Alloy Systems by : James S. Wolf
Download or read book Observations of Internal Oxidation in Six Nickel-base Alloy Systems written by James S. Wolf and published by . This book was released on 1965 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Relationship of Heat Treatment and Microstructure to Corrosion Resistance in Wrought Ni-Cr-Mo Alloys by : M. A. Streicher
Download or read book Relationship of Heat Treatment and Microstructure to Corrosion Resistance in Wrought Ni-Cr-Mo Alloys written by M. A. Streicher and published by . This book was released on 1965 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: In an investigation of the effect of heat treatment on microstructure and corrosion resistance, seven heats of wrought Ni-Cr-Mo alloy were heated in the range of 800 F to 2375 F. Corrosion was studied in reducing and in oxidizing acids. Oxalic acid etch structures produced by various precipitates were classified and correlated with corrosion rates. Two maxima in corrosion rates were found: one on specimens heated near 1400 F and the other on specimens heated near 1900 F. In hydrochloric acid, only the maximum at 1400 F is revealed, while in chromic acid, only the maximum at 1900 F is detected. Both maxima are revealed by exposure to nitric acid, pure sulfuric acid and ferric sulfate-sulfuric acid solution.
