Ultrafine-grain metals by severe plastic deformation

Abstract : As a relatively simple top-down technique to produce nanomaterials in bulk, severe plastic deformation became a new way of transforming the microstructure of the material. When carried out at sufficiently low temperature, extreme large plastic deformations lead to ultrafine-grain or nearly nano-structured material. The aim of the present tutorial review is to give basic insight into the field of ultrafine-grain materials obtained by severe plastic deformation. The main features of the obtained microstructures are presented, the most important advantage of ultrafine-grain materials - an enhanced mechanical strength with respect to their coarse grained counterparts - is discussed. The operating deformation mechanisms that lead to the grain refinement are also examined. Finally, dynamic recrystallization which produces the ultrafine-grain structure is characterized and the main results of modeling efforts reproducing the grain refinement and several microstructure features are presented.
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Materials Characterization, Elsevier, 2014, 92, pp.1-14. 〈10.1016/j.matchar.2014.02.003〉
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https://hal.univ-lorraine.fr/hal-01513742
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Soumis le : mardi 25 avril 2017 - 14:28:49
Dernière modification le : mercredi 12 septembre 2018 - 01:27:27

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Laszlo S. Toth, Chengfan Gu. Ultrafine-grain metals by severe plastic deformation. Materials Characterization, Elsevier, 2014, 92, pp.1-14. 〈10.1016/j.matchar.2014.02.003〉. 〈hal-01513742〉

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