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Showing 1 to 5 of 5 for “"Portevin-Le Chatelier effect"”.
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Phase stability and the Portevin-Le Chatelier effect in Cr-Mn-Fe-Co-Ni High-Entropy Alloys
… materials based on the combination of multiple principal elements, often with the intention to form a concentrated solid solution. It has been suggested that these solid solution phases could offer enhanced mechanical properties, due to fluctuations in their local atomic environments. …
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A multiscale study on the origins of the Portevin-Le Chatelier effect in polycrystalline nickel-based superalloys
… localisation during constant strain rate tensile testing, termed the Portevin-Le Chatelier (PLC) effect. This includes nickel-based superalloys, between approximately 200 °C and 600 °C. The PLC effect is widely attributed to Dynamic Strain Ageing (DSA), referring to dislocation pinning effects …
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On the observations of autowaves and avalanches in an aluminum magnesium alloy
… uniform deformation before the onset of the Portevin-Le Chatelier effect. The formation of the synchronous oscillations suggests a reduction in dimensionality in the system. These waves eventually transition into intermittent plastic behavior which is attributed to dislocation avalanches. The …
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Dynamic weakening and trained memory in avalanche dynamics from high-entropy alloys to neurons and spin systems
Avalanche dynamics—the abrupt, collective release of stored energy under slow external driving—arise in systems ranging from earthquakes and crystalline solids to neuronal networks and spin models. Despite differences in microscopic mechanisms, these systems share universal features such as broad …
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Thermo-mechanical response and plastic deformation behavior of Hastelloy X at elevated temperatures — role of dynamic strain aging
… strain curve. This is a consequence of the Portevin-Le Chatelier (PLC) effect, and is characterized by strain bands propagating through the length of the specimen, at specific time intervals, leading to a local increase in strain as the band propagates. Although the existence of a PLC effect …