| 1 | Transition of deformation mechanisms from twinning to dislocation slip in nanograined pure cobalt显示文摘Deformation mechanisms of nanograined and submicron-grained pure cobalt processed by means of high strain rate shear deformation at cryogenic temperatures were studied.Microstructural analysis revealed a transition of governing deformation mechanism from deformation twinning and dislocation slip in submicron-grains to and dislocations slip in nanograins.Microhardness tests illustrated that the Hall-Petch relation slope changes consequently with the transition of deformation mechanism. | Y.W.Qi Z.P.Luo X.Y.Li K.Lu | 2022 | Journal of Materials Science & Technology2022，，26： | 0 |
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