ELEVATED TEMPERATURE TENSILE AND FATIGUE BEHAVIOR OF UNALLOYED ARC-CAST MOLYBDENUM. Period Covered: April 1957 to October 1958
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 molybodenum 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 deg F. However, values of the upper and lower yield point remain essentially unchanged over the temperature range 200 to 400 deg F. The presence of a "knee" in the fatigue S-log N diagram over the temperature range, 75 to 875 deg F, suggests that strain aging may be influencing the fatigue behavior in this teinperature range and may also be responsible for the high values of fatigue ratio appearance of a sharp "knee" in the S-N diagram is particularly pronounced at 675 deg F. (auth)
- Research Organization:
- Illinois. Univ., Urbana
- DOE Contract Number:
- AF33(616)-5153
- NSA Number:
- NSA-13-015367
- OSTI ID:
- 4251435
- Report Number(s):
- TAM-147; WADC-TN-59-59; AD-210
- Resource Relation:
- Other Information: Project No. 7024. Orig. Receipt Date: 31-DEC-59
- Country of Publication:
- United States
- Language:
- English
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