DEVELOPMENT OF TANTALUM-TUNGSTEN ALLOYS FOR HIGH PERFORMANCE PROPULSION SYSTEM COMPONENTS

Abstract

Seven carburized Ta-W alloy MERM nozzles have been shipped to Aerojet-General Corporation for test firing, completing the planned MERM nozzle series. a-10 nd 15W alloy ARC nozzles have been carburized. The carburizing furnace design has been improved to permit 9-hr exposures; an available furnace has been modified for the carburizing of test samples at 2500 C. Ta-15 and 30W alloys were successfully upset forged at 3500 and 4000 F to provide stock for sheet rolling and test samples. Electron microprobe analysis of carburized Ta alloys shows that Hf s gregates to the carbide phases, while W seems to segregate to the matrix. T SE ARE PRELIMINARY RESULTS BASED ON TRENDS SHOWN IN THE RAW DATA. W additions in carburized Ta increase the rate of C pickup and increase dimensional changes during carburization. W also results in changes in the relative abundance of carbide phases and the morphology of the carbide phases. (Author)

Document Details

Document Type
Technical Report
Publication Date
Mar 20, 1962
Accession Number
AD0275158

Entities

People

  • R.w. Douglass

Tags

DTIC Thesaurus Topics

  • Alloys
  • Carburizing
  • Corporations
  • Electrons
  • Microprobes
  • Propulsion System Components
  • Propulsion Systems
  • Tantalum
  • Tungsten
  • Tungsten Alloys

Fields of Study

  • Materials science

Readers

  • Metallurgy
  • Rocket Propulsion.

Technology Areas

  • Microelectronics
  • Microelectronics - Microelectromechanical Systems