Microstructure and excellent performance enhancement of MEA base composites with multi-phase induced by ultrasonic assisted laser technology
Source abstract
Abstract
The ceramics reinforced medium entropy alloy base composites (MEABCs) were manufactured by ultrasonic vibration (UV) assisted laser cladding (LC) process, which were investigated by scanned electron microscope (SEM), electron backscattered diffraction (EBSD) and transmission electron microscope (TEM). The microstructure of MEABCs was mainly composed of body centered cubic (BCC), intermetallics and TiN ceramics, the fine dendrites were produced under the action of the cavitation and the acoustic flow effects of UV, increasing the dislocation density to promote the low angle grain boundary (LAGBs). The micro-hardness and the wear resistance of the composites were enhanced by the second phase and fine grain strengthening. The diffusion of the elements such as Cr/Ni and the generation of LAGBs contributed to the enhancement of the corrosion resistance of the composites.
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Research context
OpenAlex topics: High Entropy Alloys Studies · High-Temperature Coating Behaviors · Additive Manufacturing Materials and Processes
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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