Affiliation:
1. CONICET-UNR Universidad Nacional de Rosario
2. Ecole Centrale de Lille
Abstract
In this work, the formation of fatigue cracks is considered as a nucleation process due
to the development of a characteristic microstructure formed just beneath the specimen surface.
Strain controlled cyclic tests were carried out at room temperature at total strain ranges εt = 0.8
and 1.2% in flat specimens of SAF 2507 Duplex Stainless Steel (DSS). The results show that for
this DSS, at εt = 0.8%, the correlation between phases (Kurdjumov-Sacks crystallographic
relation) plays an important role in the formation of microcracks. On the other hand, at εt = 1.2%,
microcracks initiate in the ferritic phase and the K-S relation does not seem to affect the formation
of the cracks.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Reference12 articles.
1. A. Bataille, T. Magnin, Acta Mater. Vol 42 (1994), pp.3817-25.
2. J.C. Grosskreutz and H. Mughrabi, in: Constitutive Equations in Plasticity, edited by Ali S. Argon. The MIT Press, Cambridge, Massachusetts, 251 (1975).
3. S. Suresh, in: Fatigue of Materials, 2 nd Ed, Cambridge University Press, 132 (1998).
4. H. Mughrabi, F. Ackermann and K. Herz, ASTM-STP 675 (1979), pp.69-105.
5. H. Mughrabi, K. Herz and X. Stark, Int. J. Fracture, Vol. 17 (1981), pp.193-220.
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