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Abstract

The present work deals with the evaluation of the rotating bending properties of a high-manganese austenitic stainless steel (AMCR-0033) which is of interest for structural use for fusion reactor applications. Fatigue specimens have been obtained from a 30 mm thick plate (solution annealing conditions) by a highly controlled procedure in order to avoid discontinuities on the surface and sub-surface of the samples. The curve obtained shows that the AMCR-0033 room temperature fatigue limit is significantly higher than the corresponding value for conventional type 362 stainless steel. According to microstrucutural examinations (optical microscopy, scanning electron microscopy and X-ray diffraction microanalysis) performed on several deformed specimens, the improvement in fatigue strength in AMCR-0033 with respect to type 316 steel is related to the gamma (fcc) austenitic to epsilon (hcp) martensite transformation process occurring during room temperature deformation.

Additional information

Authors: CLERICI P, Università delgi Studi di Ancona (IT);DAVOLI P, Politecnico di Milano (IT);PIATTI G, JRC Ispra Estab. (IT)
Bibliographic Reference: Paper presented: International Conference on Evolution of Structural Materials, Milano (IT), May 31-June 2, 1989
Availability: Available from (1) as Paper EN 34767 ORA
Record Number: 198910655 / Last updated on: 1994-12-01
Category: PUBLICATION
Original language: en
Available languages: en