Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 6 of 6 for “"PLC effect."”.
-
A multiscale study on the origins of the Portevin-Le Chatelier effect in polycrystalline nickel-based superalloys
… 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 caused by the diffusion of solute to …
-
Plastic Instability Due to Collective Dislocation Effect in Portevin-Le Châtelier Effect and Dislocation Nucleation
… instability, the Portevin-Le Châtelier (PLC) effect and the cooperative nucleation of dislocation loops, have been studied. In the experimental part of the work, two creep-type mechanical tests have been conducted on a Cu-10at.%Al single crystal and a Mg single crystal to study the …
-
Thermo-mechanical response and plastic deformation behavior of Hastelloy X at elevated temperatures — role of dynamic strain aging
… 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 in Hastelloy X has …
-
Phase stability and the Portevin-Le Chatelier effect in Cr-Mn-Fe-Co-Ni High-Entropy Alloys
… of experiments is presented, which establish the effect of Co and Fe on the phase equilibria of the widely studied CrMnFeCoNi system. Both Co and Fe were found to stabilise the A1 matrix relative to the A2 and D8b phases at elevated temperatures but did not prevent the formation of ordered phases …
-
Mechanical property of body-thoroughly enhanced austenitic stainless steel and high-Mn steel by industry-applicable 3-axis stress-released impact
… in the SS contributes extra strengthening effects. The great ductilities of the austenitic steels are attributed to the high volume of twins produced by this novel process. The high-Mn steel experiencing the uniaxial impact plus annealing treatment displays severe PLC effect. By examining …
-
Kinetics of Plastic Flow in Polycrystal Plasticity
… description of the Portevin - Le Chatelier (PLC) effect to be included in the model. Finite element simulations of this phenomenon show the transition from continuous to discontinuous shear band propagation as the applied strain rate is decreased. Across this transition the stress drop …