Some studies on the influence of stress ratio and test temperature on X-ray fractography observations in C45 steel specimens

K. Rajanna, B. Pathiraj, B.H. Kolster

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Abstract

This paper deals with additional ¿X-ray fractography¿ observations made on C45 steel, subsequent to the earlier work [K. Rajanna, B. Pathiraj and B. H. Kolster, Fatigue fracture surface analysis in C45 steel specimens using X-ray fractography. Engng Fracture Mech. 39, 147¿157 (1991)]. Fatigue crack: growth tests were carried out at 20°C on CT samples prepared from this steel using different stress ratios (0.1R, 0.5R and 0.7R). Tests were also carried out at different temperatures (¿20°C, 20°C and 115°C) using a stress ratio of 0.1. The fractured surfaces were analysed for their residual stress state. The influence of the test conditions on the residual stresses developed is discussed.
Original languageEnglish
Pages (from-to)457-470
JournalEngineering fracture mechanics
Volume54
Issue number4
DOIs
Publication statusPublished - 1996

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