Fatigue Strength of Metals Containing Inclusions and Phase Inhomogeneity
Fatigue strength data of metals are picked up from literature and rearranged on the basis of the equivalent stress ratio which has previously been proposed by the author. The characteristics of fatigue strength are especially investigated for metals containing nonmetallic inclusions and phase in-homogeneity. As a result, it is found that σ w2 -type fatigue strength is often exhibited even in a specimen without a notch and it leads to a wide range of scattering of fatigue strength of unnotched specimens.
Yu Zhou, Shan-Tung Tu and Xishan Xie
H. Matsuno "Fatigue Strength of Metals Containing Inclusions and Phase Inhomogeneity", Key Engineering Materials, Vols. 353-358, pp. 1090-1093, 2007