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The Effect Of Heat Treatment On Residual Stress And Machining Distortions In Advanced Nickel Base Disk Alloys
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Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781721017348 Total Pages :54 pages Book Rating :4.0/5 (173 download)
Book Synopsis The Effect of Heat Treatment on Residual Stress and Machining Distortions in Advanced Nickel Base Disk Alloys by : National Aeronautics and Space Administration (NASA)
Download or read book The Effect of Heat Treatment on Residual Stress and Machining Distortions in Advanced Nickel Base Disk Alloys written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-11 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper describes an extension of NASA's AST and IDPAT Programs which sought to predict the effect of stabilization heat treatments on residual stress and subsequent machining distortions in the advanced disk alloy, ME-209. Simple "pancake" forgings of ME-209 were produced and given four heat treats: 2075F(SUBSOLVUS)/OIL QUENCH/NO AGE; 2075F/OIL QUENCH/1400F@8HR;2075F/OIL QUENCH/1550F@3HR/l400F@8HR; and 2160F(SUPERSOLVUS)/OIL QUENCH/1550F@3HR/ 1400F@8HR. The forgings were then measured to obtain surface profiles in the heat treated condition. A simple machining plan consisting of face cuts from the top surface followed by measurements of the surface profile opposite the cut were made. This data provided warpage maps which were compared with analytical results. The analysis followed the IDPAT methodology and utilized a 2-D axisymmetric, viscoplastic FEA code. The analytical results accurately tracked the experimental data for each of the four heat treatments. The 1550F stabilization heat treatment was found to significantly reduce residual stresses and subsequent machining distortions for fine grain (subsolvus) ME209, while coarse grain (supersolvus) ME209 would require additional time or higher stabilization temperatures to attain the same degree of stress relief.Gayda, JohnGlenn Research CenterRESIDUAL STRESS; HEAT RESISTANT ALLOYS; NICKEL ALLOYS; TEMPERATURE EFFECTS; HEAT TREATMENT; STABILIZATION; VISCOPLASTICITY
Book Synopsis The Effect of Heat Treatment on Residual Stress and Machining Distortions in Advanced Nickel Base Disk Alloys by :
Download or read book The Effect of Heat Treatment on Residual Stress and Machining Distortions in Advanced Nickel Base Disk Alloys written by and published by . This book was released on 2001 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effect of Stabilization Heat Treatments on the Tensile and Creep Behavior of an Advanced Nickel-Based Disk Alloy by :
Download or read book The Effect of Stabilization Heat Treatments on the Tensile and Creep Behavior of an Advanced Nickel-Based Disk Alloy written by and published by . This book was released on 2003 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781721588756 Total Pages :28 pages Book Rating :4.5/5 (887 download)
Book Synopsis The Effect of Tungsten and Niobium on the Stress Relaxation Rates of Disk Alloy Ch98 by : National Aeronautics and Space Administration (NASA)
Download or read book The Effect of Tungsten and Niobium on the Stress Relaxation Rates of Disk Alloy Ch98 written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-20 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gas turbine engines for future subsonic transports will probably have higher pressure ratios which will require nickel-base superalloy disks with 1300 to 1400 F temperature capability. Several advanced disk alloys are being developed to fill this need. One of these, CH98, is a promising candidate for gas turbine engines and is being studied in NASA s Advanced Subsonic Technology (AST) program. For large disks, residual stresses generated during quenching from solution heat treatment are often reduced by a stabilization heat treatment, in which the disk is heated to 1500 to 1600 F for several hours followed by a static air cool. The reduction in residual stress levels lessens distortion during machining of disks. However, previous work on CH98 has indicated that stabilization treatments decrease creep capability. Additions of the refractory elements tungsten and niobium improve tensile and creep properties after stabilization, while maintaining good crack growth resistance at elevated temperatures. As the additions of refractory elements increase creep capability, they might also effect stress relaxation rates and therefore the reduction in residual stress levels obtained for a given stabilization treatment. To answer this question, the stress relaxation rates of CH98 with and without tungsten and niobium additions are compared in this paper for temperatures and times generally employed in stabilization treatments on modern disk alloys. Gayda, John Glenn Research Center NASA/TM-2003-212472, E-14010, NAS 1.15:212472
Book Synopsis The Tensile Properties of Advanced Nickel-Base Disk Superalloys During Quenching Heat Treatments by :
Download or read book The Tensile Properties of Advanced Nickel-Base Disk Superalloys During Quenching Heat Treatments written by and published by . This book was released on 2001 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Workability and Process Design by : George E. Dieter
Download or read book Handbook of Workability and Process Design written by George E. Dieter and published by ASM International. This book was released on 2003-01-01 with total page 410 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 118 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.
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781721017645 Total Pages :84 pages Book Rating :4.0/5 (176 download)
Book Synopsis The Effect of Stabilization Heat Treatments on the Tensile and Creep Behavior of an Advanced Nickel-Based Disk Alloy by : National Aeronautics and Space Administration (NASA)
Download or read book The Effect of Stabilization Heat Treatments on the Tensile and Creep Behavior of an Advanced Nickel-Based Disk Alloy written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-11 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: As part of NASA s Advanced Subsonic Technology Program, a study of stabilization heat treatment options for an advanced nickel-base disk alloy, ME 209, was performed. Using a simple, physically based approach, the effect of stabilization heat treatments on tensile and creep properties was analyzed in this paper. Solutions temperature, solution cooling rate, and stabilization temperature/time were found to have a significant impact on tensile and creep properties. These effects were readily quantified using the following methodology. First, the effect of solution cooling rate was assessed to determine its impact on a given property. The as-cooled property was then modified by using two multiplicative factors which assess the impact of solution temperature and stabilization parameters. Comparison of experimental data with predicted values showed this physically based analysis produced good results that rivaled the statistical analysis employed, which required numerous changes in the form of the regression equation depending on the property and temperature in question. As this physically based analysis uses the data for input, it should be noted that predictions which attempt to extrapolate beyond the bounds of the data must be viewed with skepticism. Future work aimed at expanding the range of the stabilization/aging parameters explored in this study would be highly desirable, especially at the higher solution cooling rates.Gayda, JohnGlenn Research CenterHEAT TREATMENT; NICKEL ALLOYS; STABILIZATION; TENSILE CREEP; CREEP PROPERTIES; TEMPERATURE EFFECTS; STATISTICAL ANALYSIS; HEAT OF SOLUTION
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 1460 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book Metals Abstracts written by and published by . This book was released on 1998 with total page 1076 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Tensile Properties Of Advanced Nickel-Base Disk Superalloys During Quenching Heat Treatments ... NASA by : United States. National Aeronautics and Space Administration
Download or read book The Tensile Properties Of Advanced Nickel-Base Disk Superalloys During Quenching Heat Treatments ... 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 An Investigation of Residual Stresses and Post-weld Heat Treatment Cracking in Welded Nickel-base Alloys by : H. B. Peacock
Download or read book An Investigation of Residual Stresses and Post-weld Heat Treatment Cracking in Welded Nickel-base Alloys written by H. B. Peacock and published by . This book was released on 1970 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Predicasts Technology Update written by and published by . This book was released on 1991 with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Metals Abstracts Index written by and published by . This book was released on 1996 with total page 1622 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 : 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 Superalloys by : Matthew J. Donachie
Download or read book Superalloys written by Matthew J. Donachie and published by ASM International. This book was released on 2002 with total page 439 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers virtually all technical aspects related to the selection, processing, use, and analysis of superalloys. The text of this new second edition has been completely revised and expanded with many new figures and tables added. In developing this new edition, the focus has been on providing comprehensive and practical coverage of superalloys technology. Some highlights include the most complete and up-to-date presentation available on alloy melting. Coverage of alloy selection provides many tips and guidelines that the reader can use in identifying an appropriate alloy for a specific application. The relation of properties and microstructure is covered in more detail than in previous books.
Book Synopsis Metalworking by : ASM International. Handbook Committee
Download or read book Metalworking written by ASM International. Handbook Committee and published by ASM International(OH). This book was released on 2005 with total page 912 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiatin (Air Force Research Laboratory, Materials and Manufacturing Directorate) collects recent work detailing bulk forming methods (such as forging, extrusion, drawing, and rolling), where three-dimensional deformation produces a new shape with significant change in the cross- section of thickness of a material. In addition to content from previ
