A closed cycle, nuclear powered turbine was designed to use helium as the turbine working fluid rather than oxidizing combustion gas. The strength of turbine materials in helium was a major design consideration. Tests for stress-rupture, heat, and material fatigue were conducted. Mechanical properties of alloys are affected in gaseous environments in varying degrees depending on the environment itself, temperature, strain rate, and alloy composition. Inconel X and Discaloy, alloys used for commercial industrial gas turbine blades and discs respectively, were chosen for evaluation in carbon dioxide and helium. The program was expanded to investigate selection of alloys stronger than Inconel X and Discaloy suitable for use in the maritime gas cooled reactor turbomachinery; evolution of a test program for generation of data in helium pertinent to the design of turbomachinery; and development of test procedures to permit repetitive control of the test atmosphere and provide reproducibility of test results.

  • Supplemental Notes:
    • This document is available for review at the Department of Commerce Library, Main Commerce Building, Washington, D.C., under reference number GTM-ER-76.
  • Corporate Authors:

    General Dynamics

    Quincy, MA  United States  02169

    Westinghouse Electric Corporation

    Steam Division - Lester Works
    Lester, PA  United States 
  • Authors:
    • Wall, F J
  • Publication Date: 1959-11-30

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: 64 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00026176
  • Record Type: Publication
  • Source Agency: Maritime Administration
  • Report/Paper Numbers: GTM-76 Prog Rpt
  • Contract Numbers: AT(04-3)-187
  • Files: TRIS, USDOT
  • Created Date: Feb 6 1974 12:00AM