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Dislocation structure and corduroy contrast in a 316L alloy fatigued at (0.3–0.5) Tm

1993; Elsevier BV; Volume: 164; Issue: 1-2 Linguagem: Inglês

10.1016/0921-5093(93)90667-4

1873-4936

M. Gerland, J. Mendez, J. Lépinoux, P. Violan,

Hydrogen embrittlement and corrosion behaviors in metals

An austenitic stainless steel 316L was fatigued under vacuum at intermediate temperatures. At 300 °C the fatigue life of this alloy is much higher than at room temperature or at 600 °C. This behaviour is associated with the occurrence of the Portevin-LeChatelier effect and with the presence of a corduroy contrast and a corduroy dislocation microstructure. These different features are described and a coherent explanation is proposed.