Abstract
Plane bending fatigue tests were carried out on several kinds of hot-rolled low-carbon steel sheets with texture to clarify the effects of texture on fatigue crack propagation. The crack growth rate of each material was determined uniquely by a term σanl, where σa is nominal stress amplitude, l is the crack length, and n is a material constant. The n exhibited different values according to the materials, whereas there is not so much difference in the σB of each material. The different n in such materials may result from the difference in texture. Moreover, the value of n tended to decrease with an increase in r value, plastic anisotropy ratio. The analysis based on the small-crack growth law, dl/dN=C3(σa/σB)nl, in which the effect of a material property was considered, suggested that the effect of texture on the value of C3 is negligible. The reciprocal of C3 represents the resistance to small crack propagation in each material.
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