Microstructural changes during deformation of martensitic steels under low loads
Deformation and damage of martensitic steels tempered at high temperature: fatigue, creep and creep/fatigue

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Microstructural changes during deformation of martensitic steels under low loads
Deformation and damage of martensitic steels tempered at high temperature: fatigue, creep and creep/fatigue

Author : Maxime SAUZAY

Publication date: June 10, 2012 | Lire en français

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3. Microstructural changes during deformation of martensitic steels under low loads

3.1 Cyclic deformation

Thanks to the numerous cyclic tests described above, and EBSD (Electron Back Scattering Diffraction) and TEM observations carried out on selected specimens after fracture, the effect of cyclic deformation and dwell time on microstructural evolutions has been intensively studied. Subgrain size is initially of the order of 0.5 µm and total dislocation density 1-2 10 14 m -2

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Microstructural changes during deformation of martensitic steels under low loads

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