University of Illinois Urbana-Champaign

Elevated temperature tensile and fatigue behavior of unalloyed arc cast molybdenum

Brock, G.W.; Sinclair, G.M.

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https://hdl.handle.net/2142/111855

Description

Title
Elevated temperature tensile and fatigue behavior of unalloyed arc cast molybdenum
Author(s)
  • Brock, G.W.
  • Sinclair, G.M.
Issue Date
1959-02
Keyword(s)
  • Molybdenum
  • Tensile Behavior
  • Fatigue Behavior
Abstract
Tension and fatigue tests were carried out over a range of temperatures to explore the possible effects of interaction between interstitial atoms and dislocations on fatigue behavior of recrystallized molybdenum containing small amounts of interstitial elements. No increase in tensile strength corresponding to that found in the “blue brittle” range in steel was observed as the test temperatures were raised over the range -300 to 1800°F. However, values of the upper and lower yield point remain essentially unchanged over the temperature range 200° to 400°F. The presence of a “knee” in the fatigue S-log N diagram over the temperature range, 75° to 875°F, suggests that strain aging may be influencing the fatigue behavior in this temperature range and may also be responsible for the high values of fatigue ratio (0.65-0.72) observed at these temperatures. The appearance of a sharp “knee” in the S-N diagram is particularly pronounced at 675°F.
Publisher
Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report Name or Number
  • TAM R 147
  • 1967-0443
ISSN
0073-5264
Type of Resource
text
Language
eng
Permalink
http://hdl.handle.net/2142/111855
Sponsor(s)/Grant Number(s)
Wright Air Development Center, Air Research and Development Command, United States Air Force, Wright-Patterson Air Force Base, Ohio, Materials Laboratory, Contract No. AF 33(616)-5153, Project No. 7024
Copyright and License Information
Copyright 1959 Board of Trustees of the University of Illinois

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Technical Reports - Theoretical and Applied Mechanics (TAM) PRIMARY
TAM technical reports include manuscripts intended for publication, theses judged to have general interest, notes prepared for short courses, symposia compiled from outstanding undergraduate projects, and reports prepared for research-sponsoring agencies.