Abstract
PPB precipitation in powdered Rene'95 is analyzed. The effects of PHT on PPB precipitation are studied. It is found that fracture along PPB is ductile in microscale. During PHT, the phase transformation on powder surface is similar to PPB interface. PHT cannot reduce the degree of contamination on powder surface. But the precipitates on surface are coarsened. The coarsening enlarges distances between precipitates. As the result, microfracture property is improved at PPB.
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Wanhong, Y., Jian, M., Wuxiang, W. et al. Effects of heat treatment on prior particle boundary precipitation in a powder metallurgy nickel base superalloy. Adv Perform Mater 2, 269–279 (1995). https://doi.org/10.1007/BF00705449
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DOI: https://doi.org/10.1007/BF00705449