Application of Rapidly Solidified Superalloys.

Abstract

This program is being conducted for the purpose of applying the principle of rapid solidification to superalloy powders and subsequent development of a stronger alloy composition for jet engine turbine airfoils. Centrifugal atomization and forced convective cooling are being used to produce the fast-cooled material. During this report period, alloy iterations of the conventional and Ni-Al-Mo series were conducted; further work was conducted on phase thermal stability, grain orientation features, and forgeability. Creep-rupture testing continued with major results showing that Ta additions to Ni-Al-Mo alloys promote a stable phase dispersion up to the temperatures of gamma dissolution and early indications suggest that significant creep resistance is derived by the evolved Ni-Al-Mo-Ta microstructures.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1978
Accession Number
ADA134927

Entities

People

  • A. R. Cox
  • E. H. Aigeltinger
  • T. Tillman
  • W. K. Forrester

Organizations

  • Pratt & Whitney

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Alloys
  • Cellular Structures
  • Chemistry
  • Failure Mode And Effect Analysis
  • Grain Boundaries
  • Grain Growth
  • Heat Treatment
  • High Temperature
  • Materials
  • Materials Engineering
  • Materials Processing
  • Mechanical Properties
  • Orientation (Direction)
  • Resistance
  • Solid Solutions
  • Temperature Gradients
  • Thermal Stability

Fields of Study

  • Materials science

Readers

  • Combustion and Flow Dynamics.
  • Materials Science and Engineering.
  • Metallurgy