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Abstract

The present work deals with the study of the room temperature tensile and rotating bending fatigue properties of three new Cr-Mn (and low Ni) austenitic steels, developed as low activation structural materials for future thermonuclear fusion applications. The fatigue limits of the three alloys are quite different; this can be explained by comparing the monotonic and cyclic tensile properties, microstructures, S.E.M. analysis of the ruptured surfaces and the micro-hardness profile of the fatigued cross-section. Consideration of cyclic stress-strain behaviour and appropriate strain-gauge measurements supports calculations of effective stress distributions in fatigue tests.

Additional information

Authors: BERETTA S, Politecnico di Milano, Dipartimento di Meccanica (IT);CLERICI P, Politecnico di Milano, Dipartimento di Meccanica (IT);DAVOLI P, Politecnico di Milano, Dipartimento di Meccanica (IT);BOERMAN D, JRC Ispra (IT)
Bibliographic Reference: Paper presented: 10th Congress on Materials Testing, Budapest (HU), Oct. 7-11, 1991
Availability: Available from (1) as Paper EN 36050 ORA
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