Materials Research Letters · 2021 · 21 citations · 31 references
EngineeringMaterials EngineeringMaterials ScienceInterface ScienceMechanical Behavior Of MaterialsMetallurgyFracture MechanicsFracture PropagationFracture ToughnessHigh-temperature MaterialsHigh-temperature OxidationNickel-based SuperalloysBrittle Fracture BehaviorIn Situ Oxidation StudiesMicrostructural Evolution During OxidationOxidation Mechanisms In IntermetallicsOxidation Of Nickel-based SuperalloysOxidation Of SuperalloysSingle-crystal SuperalloysSuperalloys
Oxygen-affected cracking commonly presents on thin Ni-based single crystal superalloy components serving in high temperature and oxidizing environments. This study uses a newly developed in-situ thermal-stress environmental transmission electron microscope to investigate the oxidation and fracture behaviors of Ni-based single crystal superalloy at 650°C under stress. The in-situ oxidation was found to change the tensile fracture mode from the close-packed {111} planes of plastic fracture to {001} planes adjacent to γ/γ′ interfaces of brittle fracture. The microanalysis also revealed that the γ′ cuboids, γ phase, and γ/γ interface exhibit different oxidation behavior, thus underscoring the thickness debit effect.
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Re-epithelialization and immune cell behaviour in an ex vivo human skin model
Ana Rakita, Nenad Nikolić, Michael Mildner et al. · Scientific Reports · 2020 · 8.3K citations · Full text
Alloy design for aircraft engines
Tresa M. Pollock · Nature Materials · 2016 · 900 citations
Engineering, Aerospace Engineering, Materials Engineering +14