The general degradation mechanisms (i.e., the physical event or chain of events that underlie observed degradation effects) that must be considered include:microstructural and compositional changes, time-dependent deformation and resultant damage accumulation, environmental attack and the accelerating effects of elevated temperature, and
1 day ago · The modified Chaboche constitutive model coupled with microstructural degradation can characterize the stress-strain behavior of DZ125 superalloys with microstructural damage. (2) Compared with virgin superalloys, the pre-coarsening superalloys show more cyclic softening and mean stress relaxation characteristics, which is illustrated by the Assessment of Microstructural Degradation in 2.25Cr-1Mo Miniature specimen techniques viz. small-punch tests (SPT) have been carried out at room temperature in order to correlate the microstructural degradation of 2.25Cr-1Mo steel with that of SPT parameters. Microstructural degradation of this steel has been introduced as a result of thermal ageing corresponding to Larson-Miller parameters (LMP) values of 33,012, 35,402, 37,846 and 38,374.
Dysmorphology and microstructural degradation of the corpus callosum:Interaction of age and alcoholism. Pfefferbaum A(1), Adalsteinsson E, Sullivan EV. Author information:(1)Neuroscience Program, SRI International, 333 Ravenswood Avenue, Menlo Park, CA 94025, USA. [email protected] Entropy Free Full-Text Microstructural Degradation of This microstructural evolution will concomitantly change both the mechanical and environmental properties and is likely to be detrimental to the in-service performance of the alloy. Refractory metal high-entropy superalloys (RSA), which possess a nanoscale microstructure of B2 and bcc phases, have been developed to offer high temperature capabilities beyond conventional Ni-based alloys.
Microstructural Aspects and Mechanism of Degradation of 4H-SiC PiN Diodes under Forward Biasing - Volume 815. Please note:you will be unable to purchase articles on Cambridge Core between 8.00am and 11.00am (BST) on Tuesday 11 May. If you have any urgent queries, please visit the help pages to contact our customer service team. Microstructural Degradation and Creep Fracture Behavior of Sep 26, 2018 · The microstructural degradation and the creep fracture behavior of conventionally and thermomechanically treated Grade 91 steel were investigated after performing small punch creep tests. A remarkable reduction in creep ductility was observed for the samples thermomechanically treated in comparison to those conventionally treated under the tested conditions of load (200 N) and
Aug 03, 2018 · In the present study, the kinetics of microstructural degradation during long-term thermal exposure (LTTE) and the effects on creep deformation mechanisms of a hot corrosion-resistant single-crystal Ni-based superalloy with a low volume fraction and / lattice misfit were investigated in detail. The kinetic of coarsening in the experimental alloy conforms well to the Microstructural Degradation of NiRich Sep 14, 2018 · The microstructural degradation is worsened with increasing Ni contents in the cathode materials, directly affecting electrochemical performances such as
Nov 08, 2018 · In article number 1803179, YangKook Sun and coworkers report the microstructural degradation of Nirich Li[Ni x Co y Mn 1xy]O 2 (NCM) cathodes during calendar aging. Because an electric vehicle (EV) is intermittently used and remains stationary for long periods in the fully charged state, calendar aging significantly affects the lifetimes of EVs.Microstructural Degradation:Mechanisms, Quantification Jan 01, 2017 · The microstructural degradation therefore depends not only upon how the electrode was fabricated but also critically on how the cell is operated. In anodes the metallic phase, usually nickel, is the most vulnerable component during operation at elevated temperature. Metallic particles are prone to coarsening, oxidation, and poisoning.