Increased Re and W content leads to

Increased Re and W content leads to a tendency to deflect elements in cast alloyssignificantly increased if cast is not effectively eliminated or reduced by high temperature solid solutionMicro-biasing of elements in single-crystal high-temperature alloys will significantly increase the single crystal high temperatureThe tendency of TCP phase to precipitate when the alloy is in service for a long time, which in turn leads to long-term service of the alloySignificant lying performance. In addition, refractory elements in alloys (e.g. Re andW) Has a low diffusion factor. To sum up, the hard-to-melt element'sThe higher the content, the solid solution required to eliminate or reduce micro-biasing of difficult elementsThe longer the processing time, the higher the solubility temperature, i.e. the difficulty of the solution treatmentsignificantly increased. Design a suitable single-crystal high-temperature alloy for a generation without ReThe solid-soluble treatment system is not difficult, but with the increase of the content of refractory elements in the alloysignificantly more difficulty in alloy solid solution (especially for higher Re content)advanced single crystal high temperature alloy).