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Monday, October 19, 2020 | History

3 edition of Consolidation of an Iron-Base Superalloy by Powder Metallurgy Techniques. found in the catalog.

Consolidation of an Iron-Base Superalloy by Powder Metallurgy Techniques.

United States. Bureau of Mines.

Consolidation of an Iron-Base Superalloy by Powder Metallurgy Techniques.

by United States. Bureau of Mines.

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  • 30 Currently reading

Published by s.n in S.l .
Written in English


Edition Notes

1

SeriesReport of investigations (United States. Bureau of Mines) -- 8556
ContributionsMcilwain, J., Neumeier, L.
ID Numbers
Open LibraryOL21738684M

Directed to the powder metallurgy production of consolidated metal products wherein the starting material comprises dense wrought particles containing at least 15 percent by volume of a compressively deformable metal with the remainder being one or more other metals or non-metals with the internal structure of the particles being non-porous and with the constituents thereof being intimately. Hot isostatic pressing (HIP) is the established procedure to process Udimet Powder by Powder Metallurgy (P/M) techniques. In this paper the method of hot explosive pressing (HEP) was applied. Its main feature is the direct method of explosive pressing. To avoid any reaction beforehand, the heating device and the explosive compaction device are separated and brought together very rapidly.

A process for making nickel-based superalloys that possess excellent high-temperature properties which includes the steps of providing a metal powder having a controlled amount of oxygen and carbon which is confined and densified at an elevated temperature forming a billet that can be further deformed, if desired, to provide an appropriate shaped component.   Directed to the powder metallurgy production of consolidated metal products wherein the starting material comprises dense wrought particles containing at least 15 percent by volume of a compressively deformable metal with the remainder being one or more other metals or non-metals with the internal structure of the particles being non-porous and with the constituents thereof being .

The microstructure with homogeneously distributed grains and less prior particle boundary (PPB) precipitates is always desired for powder metallurgy superalloys after hot isostatic pressing (HIPping). In this work, we studied the effects of HIPping parameters, temperature and pressure on the grain structure in PM superalloy FGH96, by means of scanning electron microscope (SEM), electron. 1. Introduction. Nickel-based polycrystalline superalloys are widely used as high temperature materials for turbine discs of advanced aircraft engines, owing to their excellent mechanical properties at elevated temperatures [1,2,3,4].For polycrystalline superalloys with complex compositions, powder metallurgy is an essential manufacturing route, since it yields microstructure with less.


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Consolidation of an Iron-Base Superalloy by Powder Metallurgy Techniques by United States. Bureau of Mines. Download PDF EPUB FB2

Consolidation of an iron-base superalloy by powder metallurgy techniques. [Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Mines, (OCoLC) The book is comprised of nine chapters that cover the underlying principles of superalloys produced through powder metallurgy.

The text first covers concerns in pre-alloyed dispersion-free powders, such as powder production and characterization; powder consolidation methods; and quality control and non-destructive evaluation of P/M superalloys. Novel consolidation techniques for advanced applications have been dealt with.

Sintering of the compacts and the mechanisms involved in sintering have been discussed in detail. The book covers most of the recent developments in powder metallurgy such as atomization, mechanical alloying, self-propagating high-temperature synthesis, metal 5/5(5).

You can write a book review and share your experiences. Other readers will always be interested in your opinion of the books you've read. Whether you've loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them. The book is comprised of nine chapters that cover the underlying principles of superalloys produced through powder metallurgy.

The text first covers concerns in pre-alloyed dispersion-free powders, such as powder production and characterization; powder consolidation methods; and quality control and non-destructive evaluation of P/M Edition: 1.

the book is comprised of nine chapters that cover the underlying principles of superalloys produced addition of hafnium in nickel based powder metallurgy superalloy in chinese metallurgical industry atomized powder the consolidation techniques considered include hip htf ex and extf the hip material.

from various consolidation techniques and their effects on the fatigue properties of a,typical high-strength PM superalloy, Rene' The nature, origin, 'and size range of defects found in HIP, HIP t isothermally forged, extruded t isothermally forged material are powder metallurgy (PM) techniques for producing components of highly.

powder metallurgy of superalloys butterworths monographs in materials Posted By Jin Yong Media Publishing TEXT ID f Online PDF Ebook Epub Library isbn 10 0 3 isbn 13 0 4 file pdf mb preview send to kindle or email please login to your account first need help please read our short.

Element segregations in a powder metallurgy superalloy at different states are identified. • The surface energy drives precipitation of oxides, carbides, and γ' particles on powder surface during hot consolidation. • Prior particle boundary structure is distorted and more uniformly refined grains are obtained after hot extrusion.

The alloy was produced by conventional powder metallurgy superalloy methods. After forging, a gamma prime fraction of ~56% and a secondary gamma prime size of. High gamma prime superalloys by powder metallurgy. United States Patent Abstract: A series of superalloy compositions are described, which when processed according to a described processing sequence, produce homogeneous superalloy articles which contain an exceptionally high amount of the gamma prime phase.

These alloys contain. @article{osti_, title = {Powder metallurgy of superalloys}, author = {Gessinger, G H}, abstractNote = {Powder metallurgy superalloys were developed in the mid's when stronger aircraft turbine disk materials were needed.

Their characteristics of greatly reduced segregation, better hot-workability, improved mechanical properties, and cost-effective manufacturing processes made P/M. Superalloy topics range from resource availability to advanced processing such as VIM, VAR, and VADAR, along with investment casting and single crystal growth, new superplastic forming techniques and powder metallurgy, structure property relationships, strengthening mechanisms, oxidation, hydrogen embrittlement, and phase predictions.

A new third generation nickel-based powder metallurgy (PM) superalloy, designated as FGHL, was prepared by spray forming. The effects of hot isostatic pressing (HIP) and isothermal forging (IF. As part of its goal to minimize the requirements for critical materials, the federal Bureau of Mines has investigated the consolidation of an iron-base superalloy (20 pct cr, 5 pct each ni and mn, 1 pct each c, w, mo, and cb, and the balance fe) and its modifications by powder metallurgy (p/m) techniques.

Vacuum- atomized, prealloyed powder was used. Abstract. Gas turbine disks made from nickel-base superalloys are often produced using powder metallurgy (P/M) techniques because the alloy compositions normal.

A superalloy, or high-performance alloy, is an alloy with the ability to operate at a high fraction of its melting point. Several key characteristics of a superalloy are excellent mechanical strength, resistance to thermal creep deformation, good surface stability, and resistance to corrosion or oxidation.

The crystal structure is typically face-centered cubic (FCC) austenitic. characterization powder consolidation methods powder metallurgy of superalloys butterworths monographs in materials by g h gessinger 01 01 books amazonca buy powder metallurgy of metallurgy p m for the production of some high integrity superalloy components such as turbine discs.

Recent developments in superalloy-powder processing, including problems and solutions in the areas of consolidation and forming are described. Some of the metallurgy associated with the fabrication of a totally disappearing diffusion-bonded joint is discussed.

N18 is a new nickel base superalloy produced by powder metallurgy and specifically designed for high temperature turbine disk applications. The goal of the present work is to understand the conditions under which very large grains can grow in PM nickel base superalloy N18 and to identify the mechanisms responsible for this growth.

History: Nickel-base powder metallurgy (PM) superalloys have been in the hot sections of jet engine aircraft for over twenty five years. They provide improved strength, creep resistance, creep fatigue, and better low cycle fatigue properties at higher temperatures than conventional superalloys.

Powder metallurgy superalloy was developed in s, an advanced high temperature alloy preparation process due to the use of very fine metal powder as raw material, through thermal consolidation molding and subsequent thermal processing of uniform microstructure, grain fine, no macro segregation phenomenon, and the alloy of high temperature.Powder metallurgy (PM) is a term covering a wide range of ways in which materials or components are made from metal processes can avoid, or greatly reduce, the need to use metal removal processes, thereby drastically reducing yield losses in manufacture and often resulting in lower costs.