| Autor: |
Andreasen, D., Vitovec, F. |
| Zdroj: |
Metallurgical Transactions; 1974, Vol. 5 Issue 8, p1779-1783, 5p |
| Abstrakt: |
Fatigue crack propagation rates in an A.P.I. 5L Grade steel were investigated by means of constant deflection amplitude bending fatigue tests at 640 c.p.m. on single edge notched specimens at - 50, - 10, 20 and 70°C in argon. The data were evaluated in terms of the crack propagation rate ( da/dN) as a function of the stress intensity range (Δ/K), according to da/dN = ΔK . It was found that dynamic strain aging has a major influence on fatigue crack propagation, resulting in a maximum of the crack propagation rate at room temperature. Similarly, the cyclic plastic zone size is a maximum at room temperature. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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