NASA Logo, External Link
Facebook icon, External Link to NASA STI page on Facebook Twitter icon, External Link to NASA STI on Twitter YouTube icon, External Link to NASA STI Channel on YouTube RSS icon, External Link to New NASA STI RSS Feed AddThis share icon
 

Record Details

Record 19 of 2351
Resistance of a directionally solidified gamma/gamma prime-delta eutectic alloy to recrystallization. [Ni-base alloy]
Author and Affiliation:
Tewari, S. N.(NASA Lewis Research Center, Cleveland, OH, United States)
Scheuermann, C. M.(NASA Lewis Research Center, Cleveland, OH, United States)
Andrews, C. W.(NASA Lewis Research Center, Cleveland, Ohio, United States)
Abstract: A lamellar nickel-base directionally-solidified eutectic gamma/gamma prime-delta alloy has potential as an advanced gas turbine blade material. The microstructural stability of this alloy was investigated. Specimens were plastically deformed by uniform compression or Brinell indentation, then annealed between 750 and 1120 C. Microstructural changes observed after annealing included gamma prime coarsening, pinch-off and spheroidization of delta lamellae, and appearance of an unidentified blocky phase in surface layers. All but the first of these was localized in severely deformed regions, suggesting that microstructural instability may not be a serious problem in the use of this alloy.
Publication Date: Jan 01, 1976
Document ID:
19760060351
(Acquired Dec 01, 1995)
Accession Number: 76A43317
Subject Category: COMPOSITE MATERIALS
Document Type: Conference Proceedings
Publication Information: (SEE A76-43301 22-24)
Publisher Information: United States
Meeting Information: Conference on In Situ Composites; 2nd; September 2-5, 1975; Bolton Landing, NY
Financial Sponsor: NASA; United States
Organization Source: NASA Lewis Research Center; Cleveland, OH, United States
Description: 10p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: EUTECTIC ALLOYS; FACE CENTERED CUBIC LATTICES; MICROSTRUCTURE; NICKEL ALLOYS; RECRYSTALLIZATION; SOLIDIFICATION; COMPOSITE MATERIALS; GAS TURBINES; LAMELLA; PHASE TRANSFORMATIONS; PLASTIC DEFORMATION; TURBINE BLADES
Imprint And Other Notes: In: Conference on In Situ Composites, 2nd, Bolton Landing, N.Y., September 2-5, 1975, Proceedings. (A76-43301 22-24) Lexington, Mass., Xerox Individualized Publishing, 1976, p. 191-199; Discussion, p. 199, 200.
Availability Source: Other Sources
› Back to Top
Find Similar Records
NASA Logo, External Link
NASA Official: Gerald Steeman
Site Curator: STI Program
Last Modified: August 15, 2011
Contact Us