Quench crack behavior of nickel-base disk superalloys
Read Online
Share

Quench crack behavior of nickel-base disk superalloys

  • 488 Want to read
  • ·
  • 26 Currently reading

Published by National Aeronautics and Space Administration, Glenn Research Center, Available from NASA Center for AeroSpace Information in Cleveland, Ohio, Hanover MD .
Written in English

Subjects:

  • Superalloy disk heat treatment.

Book details:

Edition Notes

Other titlesQuench crack behavior of nickel base disk superalloys.
StatementJohn Gayda, Pete Kantzos, Jason Miller.
SeriesNASA technical memorandum -- 211984.
ContributionsKantzos, Pete., Miller, Jason., NASA Glenn Research Center.
The Physical Object
FormatMicroform
ID Numbers
Open LibraryOL16104319M

Download Quench crack behavior of nickel-base disk superalloys

PDF EPUB FB2 MOBI RTF

  An important step in this effort is an understanding of the key variables controlling the cracking tendencies of nickel-base disk alloys during quenching from supersolvus heat treatments. The objective of this study was to investigate the quench cracking tendencies of several advanced disk superalloys during simulated heat by: 9. The objective of this study was to investigate the quench cracking tendencies of several advanced disk superalloys during simulated heat treatments. Miniature disk specimens were rapidly quenched after solution heat treatments. The responses and failure modes were compared and related to the quench cracking tendencies of actual disk : Pete Kantzos, John Gayda and Jason Miller.   Separating the Influence of Environment from Stress Relaxation Effects on Dwell Fatigue Crack Growth in a Nickel‐Base Disk Alloy (Pages: ) J. Telesman T.P. Gabb. The cracking behavior in single crystal nickel-based superalloy welds was studied. A laser powder deposition process was used with Rene N5 base metal and three different filler metal alloys: IN

The turbine disk material studied in this program was the alloy designated KM4, developed by GE Aircraft Engines and Pratt and Whitney. It is a powder metallurgy alloy, which is consolidated by hot extrusion and then forged. Like all nickel-base superalloys, KM4 is strengthened by the formation of γ′ precipitates based on Ni 3 by: Quench crack was visually detected then verified by visible-dye penetrant inspection on eccentric holed disk quenched into still-water quenchant. Metallography and fractography were carried out by optical and scanning electron microscope indicating the structure of Cited by:   Superalloy development has been driven primarily by the aerospace and power industries. This compilation of papers from the Twelfth International Symposium on Superalloys, held from September , , offers the most recent technical information on this class of materials. As-quenched Martensite is hard and brittle- it has virtually no ductility. Quench cracks result from stresses produced during the transition from Austenite to Martensite, which involves an increase in volume. Quench cracks run from the surface towards the center of mass in a fairly straight line; Quench cracks do not have decarburization apparent, since the.

Quench crack behavior of nickel-base disk superalloys (OCoLC) Microfiche version: Gayda, John. Quench crack behavior of nickel-base disk superalloys (OCoLC) Material Type: Document, Government publication, National government publication, Internet resource: Document Type: Internet Resource, Computer File: All Authors. Quench crack behavior of nickel-base disk superalloys (OCoLC) Online version: Gayda, John. Quench crack behavior of nickel-base disk superalloys (OCoLC) Material Type: Government publication, National government publication, Internet resource: Document Type: Book, Internet Resource: All Authors / Contributors. Superalloys are heat resistance alloys of nickel, iron-nickel, and cobalt which can be used at high temperatures, often in excess of of the absolute melting temperature, frequently operate at Author: Andrzej Nowotnik.   Nickel-based single crystal superalloy has excellent high temperature creep and fatigue properties, these properties make the material widely used in aero-engine applications, such as turbine disks and blades [1–7].Thermal fatigue damage is one of the major failure modes of the thin-wall porous structure single-crystal by: 1.