Insights into intragranular precipitation and toughening effect of W in (Ti, W)C solid solution with TiH2 as the inducer
Source abstract
Abstract
Abstract (Ti, W)C–W composites have been successfully synthesized by in-situ precipitation of multiscale W-rich particles in (Ti, W)C solid solution incorporated with TiH 2 as inducer. The microstructure of (Ti, W)C–W composites is characterized by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. The variations in lattice parameter of (Ti, W)C solid solution with increasing the sintering temperature are dependent upon the in-situ precipitation process of W-rich phase. The low temperature sintering route is beneficial to the precipitation of W-rich phase due to high concentration gradient in (Ti, W)C solid solution. The intragranular W-rich precipitates in the (Ti, W)C matrix exhibit semi-coherent interface and an orientation relationship of [111] W //[011] (Ti, W)C . The in-situ precipitation of multiscale W-rich particles have a positive influence on the fracture toughness, and the value of (Ti, W)C–W composite obtained at 1700 °C is 4.23 MPa m 1/2 .
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced materials and composites · Advanced ceramic materials synthesis · MXene and MAX Phase Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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