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The Influence of Primary and Secondary Orientations on the Elastic Response of a Nickel-Base Single-Crystal Superalloy PUBLIC ACCESS

[+] Author Affiliations
Ali Abdul-Aziz, Sreeramesh Kalluri

Sverdrup Technology, Inc., Cleveland, OH

Michael A. McGaw

NASA Lewis Research Center, Cleveland, OH

Paper No. 93-GT-376, pp. V03CT17A037; 11 pages
doi:10.1115/93-GT-376
From:
  • ASME 1993 International Gas Turbine and Aeroengine Congress and Exposition
  • Volume 3C: General
  • Cincinnati, Ohio, USA, May 24–27, 1993
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7892-7
  • Copyright © 1993 by ASME

abstract

The influence of primary orientation on the elastic response of a [001]-oriented nickel-base single-crystal superalloy, PWA 1480, was investigated under mechanical, thermal, and combined thermal and mechanical loading conditions using finite element techniques. Elastic stress analyses were performed using the MARC finite element code on a square plate of PWA 1480 material. Primary orientation of the single crystal superalloy was varied in increments of 2°, from 0° to 10°, from the [001] direction. Two secondary orientations (0° and 45°) were considered, with respect to the global coordinate system, as the primary orientation angle was varied. The stresses developed within the single crystal plate were determined for each loading condition. In this paper, the influence of the angular offset between the primary crystal orientation and the loading direction on the elastic stress response of the PWA 1480 plate is presented for different loading conditions. The influence of primary orientation angle, when constrained between the bounds considered, was not found to be as significant as the influence of the secondary orientation angle, which is not typically controlled.

Copyright © 1993 by ASME
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