Author： Taisne A. Ecamps B. D Priester L.
Publisher： Taylor & Francis Ltd
ISSN： 0141-8610
Source： Philosophical Magazine. A. Physics of Condensed Matter. Defects and Mechanical Properties, Vol.82, Iss.15, 2002-10, pp. : 2791-2804
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Abstract
The elementary mechanisms of deformation under fatigue stress are analysed in a stainless steel bicrystal by transmission electron microscopy. Attention is paid to the interaction between lattice dislocations and a ferrite–austenite interface oriented very near the Kurdjumov–Sachs orientation relationship. Results differ according to whether the notch is located in the α phase or in the phase. Only in the bicrystal notched in the α phase was transmission of dislocations across the interface into the -phase observed. A possible correlation between the microscopic observations and the fatigue behaviour of the bicrystal is discussed.
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