Service damage mechanism and interface cracking behavior of Ni-based superalloy turbine blades with aluminized coating
Source abstract
Abstract
Abstract The service damage mechanism of K403 Ni-based superalloy turbine blade with the aluminized coating are investigated systematically. Fracture morphologies are inspected with a failure event, and the microscopic damage mechanisms are explored based on the aluminized blades with different operation times. It concludes that the formation of massive pores, aggregation of bulk carbides, coarsening and breaking of σ phases, development of continuous γ′ film, etc, lead to the multi-source fatigue cracking at the interface, with the grain boundaries and Kirkendall non-contact areas as the propagation channels, resulting in the rapid fatigue failure and significant life reduction of aluminized turbine blades.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: High Temperature Alloys and Creep · High-Temperature Coating Behaviors · Energetic Materials and Combustion
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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