INTERMEDIATE-TEMPERATURE DUCTILITY AND STRENGTH OF TUNGSTEN AND MOLYBDENUM TZM

Abstract

The ductility and strength of tungsten and molybdenum TZM have been studied as a function of temperature with emphasis on investigating the effects of strain rate, structural condition, and carbon content on mechanical properties. Both wrought-stress-relieved and recrystallized tungsten and Mo-TZM have been tested at strain rates of 0.01, 2, and 600 per min. over the temperature range -200 to 1850 C. In recrystallized Mo-TZM alloys, an intermediate-temperature region (about 1100-1500 C) of reduced ductility at the two lower strain rates was found to be caused by pronounced grain-boundary cracking. This phenomenon is associated with dynamic strengthening of the matrix as a result of precipitation during deformation.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1966
Accession Number
AD0483287

Entities

People

  • A. Gilbert
  • B. A. Wilcox
  • B. C. Allen

Organizations

  • Battelle Memorial Institute

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Chemical Analysis
  • Ductile Brittle Transition
  • Electron Beams
  • Grain Size
  • Heat Treatment
  • Heating
  • High Temperature
  • Materials
  • Materials Laboratories
  • Measurement
  • Mechanical Properties
  • Mechanical Working
  • Refractory Metals
  • Tensile Properties
  • Tensile Strength
  • Transition Temperature

Fields of Study

  • Materials science

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Metallurgy
  • Powder metallurgy of Titanium alloys.