MATERIALS INVESTIGATION, SNAP 50/SPUR PROGRAM. ELEVATED-TEMPERATURE FATIGUE STUDIES OF WROUGHT, STRESS-RELIEVED TZM ALLOY.

Abstract

Hollow tension-tension fatigue specimens of wrought, stress-relieved TZM alloy (Mo-0.5Ti-0.08Zr) were tested in 3,600-rpm Ivy dynamic creep machines to establish S-N curves at 1500 and 2000F, with potassium vapor or helium inside the specimen cavities and a vacuum on the outside. The load ratio A (ratio of alternating stress to mean stress) in all tests was 0.95. The S-N data all fall randomly within a relatively narrow scatter band which indicates that both the potassium vapor and the temperature (in the 1500 to 2000F range) have effects on fatigue performance that are so small that they are masked by the data scatter. (Author)

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1966
Accession Number
AD0813909

Entities

People

  • E. A. Kovacevich

Tags

DTIC Thesaurus Topics

  • Alkali Metals
  • Behavior And Behavior Mechanisms
  • Behavioral Disciplines And Activities
  • Behavioral Sciences
  • Cooperation
  • Elements
  • Group 1 Elements
  • Group Dynamics
  • Materials
  • Potassium

Readers

  • Powder metallurgy of Titanium alloys.
  • Structural Health Monitoring of Composite Structures.
  • Surface Engineering/Surface Coating Technology.