On high-frequency fatigue and dynamic properties at elevated temperature |
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Authors: | A Tiruvengadam A F Conn |
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Institution: | 1. Catholic University of America, 20017, Washington, D. C. 2. Materials Science Division, Hydronautics, Inc., 20810, Laurel, Md.
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Abstract: | The effects of elevated temperature and high strain rate on fatigue life and tensile properties were measured for annealed 316 stainless steel and titanium alloy 6Al?2Mo?4Zr?2Sn in the solution-heat-treated and aged condition. A 14-KHz magnetostriction oscillator was used for fatigue testing. This equipment was developed for operation in excess of 2000° F. A split Hopkinson pressure bar provided dynamic tensile data up to 1300° F at strain rates on the order of 103 in./in./sec. An attempt was made to correlate the high-frequency-fatigue data with the dynamic tensile measurements by using the Manson fatiguelife-prediction methods. This paper contains the experimental results and discusses the analysis of these experiments. |
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