Improvement of oxidation resistance and alumina regrowth ability of Ni-30Cr-5Al alloy without and with Y: Nanocrystallization effect
Source abstract
Abstract
Nanocrystallization of Ni-Cr-Al alloys decreases critical Al content ( N Al * ) for Al 2O 3 scale formation down to a level much lower than practical alloy Al content ( N Al ), and this is particularly prominent for the alloys with N Al ≤ N Al * . In this work, oxidation of coarse-grained (CG) Ni-30Cr-5Al with N Al > N Al * and its nanocrystalline (NC) counterpart has been studied, with the focuses on the following issues: (i) nanocrystallization effect on Al 2O 3 steady-state growth and regrowth; (ii) nanograin growth effect on Al 2O 3 adhesion; and (iii) role of Y played in NC alloys by comparing the differences in oxidation of the NC alloys without and with Y.
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Research context
OpenAlex topics: High-Temperature Coating Behaviors · High Entropy Alloys Studies · Aluminum Alloys Composites Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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