Experimental Investigations of Anomalous Energy Absorption in Nanocrystalline Titanium under Cyclic Loading Conditions
Article dans une revue avec comité de lecture
An infrared thermographic scanning technique has been used to study the energy absorption and dissipation under cyclic loading conditions in the nanostructural bulk titanium obtained by severe plastic deformation of an initial coarse-grained material. It is established that the character of energy absorption in the nanocrystalline material exhibits qualitative changes, which are related to specific features of interactions in the ensemble of grain-boundary defects. The mechanisms of energy absorption are explained within the framework of notions of a new class of critical phenomena in mesoscopic systems with defects featuring structure-scaling transitions.
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Article dans une revue avec comité de lecturePLEKHOV, O.A; NAIMARK, O.B; SAINTIER, Nicolas; PALIN-LUC, Thierry (MAIK Nauka/Interperiodica (МАИК Наука/Интерпериодика), 2009)The structural and thermodynamic features of the elastic–plastic transition in armco iron and its plastic deformation are studied. Energy storage in iron is shown to have a nonlinear character and be accompanied by wavelike ...
Theoretical analysis, infrared and structural investigations of energy dissipation in metals under cyclic loading Article dans une revue avec comité de lecturePLEKHOV, O.A; SAINTIER, Nicolas; PALIN-LUC, Thierry; UVAROV, S. V.; NAIMARK, O.B (Elsevier, 2007)The infrared and structural investigations of energy dissipation processes in metals subjected to cyclic loading have given impetus to the development of a new thermodynamic model with the capability of describing the ...
Article dans une revue avec comité de lecturePLEKHOV, O.A; PALIN-LUC, Thierry; SAINTIER, Nicolas; UVAROV, S. V.; NAIMARK, O.B (Wiley-Blackwell, 2005)The present work is devoted to the investigation of fatigue crack initiation and growth in middle-cycle fatigue (∼105 cycles). Smooth specimens made of 35CrMo4 quenched and tempered steel were loaded in fully reversed plane ...
Experimental and Theoretical Study of Multiscale Damage-Failure Transition in Very High Cycle Fatigue Article dans une revue avec comité de lectureBETEKHTIN, V.I.; KADOMTSEV, A.G.; NARYKOVA, M.V.; BANNIKOV, M.V.; ABAIMOV, S.G.; AKHATOV, I. S.; PALIN-LUC, Thierry; NAIMARK, O.B (Springer, 2017)Multiscale mechanisms of failure of metals (Armco iron, titanium, aluminum) are studied for high cycle and very high cycle fatigue. By correlating with the results of structural studies, a theoretical approach is developed ...
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