Forging behaviour of superalloy compacts and composites

  • 39 Pages
  • 3.59 MB
  • English
National Research Council Canada , Ottawa
Metallic composites., Fibrous composites., For
Other titlesComportement d"un superalliage brut de densification et de son composite à fibres de tungstène durant forgeage.
Statementby A. Kandeil, J-P. Immarigeon, W. Wallace = Comportement d"un superalliage brut de densification et de son composite à fibres de tungstène durant forgeage / par A. Kandeil, J-P. Immarigeon, W. Wallace.
SeriesAeronautical report ;, LR-595
ContributionsImmarigeon, J-P. A., Wallace, W.
LC ClassificationsTL507 .N28 no. 595, TA481.5 .N28 no. 595
The Physical Object
Paginationvii, 39 p. :
ID Numbers
Open LibraryOL2593177M
LC Control Number85146533

The forging behaviour of hot isostatically pressed nickel-base superalloy (Mar M) compacts, reinforced with 40% volume fraction of tungsten wires, has been examined and compared with that of the non-reinforced alloy by: 3. In the present investigation, the open-die isothermal forging of square-section billets of fibre-reinforced superalloy composites (hot isostatically pressed nickel-base superalloy compacts reinforced with 40% volume fraction of tungsten wires) at constant strain-rates was considered, with the aim of providing useful information concerning the Cited by: 2.

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The typical flow behavior of R conducted on the as-hipped fine-grained compacts since the deformation data for fine-grained microstructures is needed to model deformation in both fine and partially recrystallized coarse-grained under various test conditions is presented in Fig.

shape of the flow curves depends on the strain rate and by:   An apparatus for uniaxial compression testing has been developed to simulate isothermal forging conditions. The system can apply kN loads at temperatures up to + or - 3 C in a controlled environment and at constant true strain rates between /s and 1/s.

Results on the flow behavior of nickel-base superalloy compacts and composites are presented that demonstrate the Cited by: 9. The high temperature flow behavior of a nickel-base superalloy powder compact, prepared by hot isostatic pressing has been examined by means of uniaxial compression testing in terms of the microstructures developed during plastic flow.

The tests were done isothermally at and °C and at constant true strain rates between s-1 and 1 Cited by: W. Wallace's research works with 2, citations reads, including: The Deformation and Dynamic Recrystallization in a Hot Isostatically Pressed TiAW Powder Alloy. This book is comprised of 22 chapters that explore key issues of high temperature materials in a synergistic manner.

The first chapter reflects on the growth of the superalloy industry and its technology over the past 40 years. The Forging behaviour of superalloy compacts and composites book behavior of hot isostatically pressed nickel-base superalloy (Mar M) compacts, reinforced with 40% volume fraction of tungsten wires, has.

Purchase Superalloys, Supercomposites and Superceramics - 1st Edition. Print Book & E-Book. ISBN2 days ago  The stress-strain curves for nickel-based superalloy were obtained from isothermal hot compression tests at a wide range of deformation temperatures and strain rates.

The material constants and deformation activation energy of the investigated superalloy were calculated. The accuracy of the constitutive equation describing the hot deformation behavior of this material was confirmed by the.

The isothermal forging behavior of a wire reinforced superalloy powder composite has been examined. The material consisted of a Mar-M matrix containing 40. A. KandeilHigh temperature flow and forging behaviour of superalloy compacts and composites Ph.D.

Thesis, Carleton University, Ottawa, Canada () Google Scholar. Hot forging behavior of nickel based superalloys under elevated temperatures Results on the flow behavior of nickel-base superalloy compacts and composites are presented that demonstrate the.

Superalloys have been defined many times by metallurgists for books and conferences, with reasonable consistency. A few of the most comprehensive definitions follow: 1. A superalloy, or high-performance alloy, is an alloy usually based on Group VIII A.

Fourthly, the HIPped composite was followed by isothermal forging at °C with a forging ratio of Finally, before microstructure analysis and mechanical properties testing, all composites were subjected to a solution heat treatment at °C for 2 h and aging treatment at °C for 1 h.

Thermomechanical processing treatments for powder compacts formed from powdered superalloy compositions having a volume fraction of gamma prime greater than 35 percent are disclosed.

Isothermal forging within critical ranges of strain rate and temperature is followed by supersolvus annealing and slow cooling treatments. An enlarged grain structure about 50 to 60 microns in size is produced.

YaNan Gao, LuJun Huang, Yuan Sun, Qi An, Jie Zhang, Lin Geng, Interfacial reaction mechanism of TiBw/Ti6Al4V composites and Inconel alloys by GTAW heat transmission, Science China Technological Sciences, /s, ().

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Microstructure-Dependent Deform Behavior of a Polycrystalline Ni-Based Superalloy Based on Micropillar Compression Authors: Gao Feng Tian, Yang Chen, Bin Gan, Yan Yang, Jin Wen Zou Abstract: A study was carried out to determine the deform behavior in a polycrystalline Ni-based superalloy based on micropillar compression tests.

Mechanical Behaviour of Ultrafine Grained Cu and Cu-( and 5) vol.%Al 2 O 3 Composites Produced by Powder Compact Forging View Section, Friction and Wear Characteristics of SUS and SUS after Ultrasonic Nanocrystal Surface Modification.

To illustrate its use, results on the flow behavior of nickelbase superalloy compacts and composites are presented that demonstrate the importance of proper control of the testing parameters.

The difference in flow strength of the two materials under identical testing conditions is discussed. The deformation behaviors (flow behavior, power dissipation, dynamic recrystallization, and microstructure evolution) of a typical powder metallurgy nickel-based superalloy were investigated in.

As a kind of nickel-based superalloy, GH superalloy shows passivity in several passive solutions, for instance, NaNO 3 solution and NaClO 3 solution.

Description Forging behaviour of superalloy compacts and composites FB2

When materials perform passive behavior, there is a passive oxide film generated adhering the surface of materials with electrochemical dissolution. reinforced superalloy composite materials and the fabrication processes to produce composite turbine vanes and blades for advanced gas turbine engines.

The composite system examined consisted of a Mar-M matrix containing 40% volume fraction of tugsten wires and was prepared by hot isostatic pressing. Results on the flow behaviour. The H+F material was produced by isothermal forging of HIP preforms at temperatures between °F and °F.

The forging height reduction was nominally 70 to 80%. This material was solutioned at °F for 1 hour, air cooled and aged at °F for 8 to 16 hours.

H+F Rene' 95 has. This paper presents predictions of the mechanical response of sintered FGH96 Ni-based superalloy powder compacts at high temperatures, obtained by the analysis of 3D representative volume elements generated by both X-ray tomography and a virtual technique.

We continue our series on nonferrous forging metals with this article, which discusses superalloys used in forged components. A general description of superalloys is followed by details of their chemistry and microstructure.

Applications of forged superalloy components, forging issues and special considerations for forgers who handle superalloys are also examined. Abstract: The deformation behavior of a UdimetLi superalloy under hot compression tests was characterized in the temperature range of ~°C and strain rate range of ~20sProcessing maps were conducted at a series of strains to calculate the efficiency of hot working and to recognize the instability regions of the flow behavior.

A number of different forging methods are used in superalloy part fabrication, ~9 including open die forging, closed die forging, upset forging, Superalloys Upset Ratio = Initial Height/Final Height 2 1 4 6 I 10 I B n~ Ren~ 41 at ~ F.m.D.l 0 0 C u.m Ren~ 41 at ~ / B A at ~ F u Q.

20~ 0 0 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.4/5(5). Books Journals Engineering Research.

Applied Mechanics and Materials Advances in Science and Technology International Journal of Engineering Research in Africa Nano Hybrids and Composites Books Topics.

All books. Materials Science Building Materials. Presently, little enhancement in superalloy purity can be achieved by changing the chemical composition of the superalloy, adjusting the forging process, or improving the thermal processing technique [15,16,17].

Adjusting the superalloy melting process, on the .Metal matrix composites (MMC), especially Al matrix composites, received a lot of attention during many years of research because of their promise for the development of automotive and aerospace materials with improved properties and performance, such as lighter weight and better structural properties, improved thermal conductivity and wear resistance.vii Dedication We wish to dedicate this book to our parents, Viola and Matthew Donachie, and our wives, Cynthia and Martha.

Our father was an outstanding self-taught metallurgist.