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Article Dans Une Revue Materials Science and Engineering: A Année : 2015

Strengthening and weakening by repeated dynamic impact in microcrystals and nanocrystals

Résumé

Experiments on micrograined (mg) and nanocrystalline (nc) Ni revealed strengthening and weakening following repeated dynamic impact. The strengthening in mg-Ni arises from intragranular dislocations without a significant change in grain size, whereas the weakening in nc-Ni is due to concurrent grain growth. The strength of mg and nc-Ni samples after deformation settles at similar to 900 MPa, with differing contributions from intragranular dislocations and grain sizes.
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Dates et versions

hal-01514956 , version 1 (26-04-2017)

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Thangaraju Shanmugasundaram, Emmanuel Bouzy, A. H. Chokshi. Strengthening and weakening by repeated dynamic impact in microcrystals and nanocrystals. Materials Science and Engineering: A, 2015, 639, pp.97-102. ⟨10.1016/j.msea.2015.04.086⟩. ⟨hal-01514956⟩
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