Axial-Load Fatigue Properties of PH 15-7 Mo Stainless Steel in Condition TH 1050 at Ambient Temperature and 500 Degrees F.

摘要

Axial-load fatigue tests were conducted on notched and unnotched sheet specimens of PH 15-7 Mo stainless steel in Condition TH 1050. Fatigue lives at three mean stresses at ambient temperature (approx. 80 deg F) and at 500 deg F were determined throughout the lifetime range from 10(exp 2)to 10(exp 7) cycles. A special furnace incorporating guide plates is also described. A 500 deg F environment increased the fatigue limit but reduced the fatigue strength at short lifetimes. An effect of cyclic frequency was noted.