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- W2938691275 abstract "The causes of cracking during thermal post-processing of laser powder bed fabricated (LPBF) CM247LC Ni-superalloy have been examined. Micro-hardness measurements and microstructural analyses were undertaken following short aging heat treatments around the phase transformation temperatures identified by Differential Scanning Calorimetry (DSC) analysis of the as-built condition. Results showed a steep increase in cracking density in the samples between 450 °C and 600 °C, which corresponded to changes in the microstructure, hardness, and elastic modulus. A combination of ductility dip cracking and strain age cracking mechanisms were identified as the primary causes of cracking in LPBF CM247LC following post-build thermal treatments. The results of this work shed light on the relationship between the heat treatment temperatures and the onset of post-build cracking, and could help develop post-LPBF heat treatments for high γ′ Ni-superalloys." @default.
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- W2938691275 date "2019-07-01" @default.
- W2938691275 modified "2023-10-16" @default.
- W2938691275 title "Cracking during thermal post-processing of laser powder bed fabricated CM247LC Ni-superalloy" @default.
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- W2938691275 doi "https://doi.org/10.1016/j.matdes.2019.107793" @default.
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