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Abstract: Effects of contents of boron and carbon on microstructure and mechanical properties of Ni3Al-base single crystal alloy IC6SX after long-term aging at 1070°C were investigated. It was found that, stress rupture life of samples with lower contents of boron and carbon was longer than that of higher contents of boron and carbon prior to long-term aging, but decreased much faster after aging...
The effects of long-term aging at 1070 °C for periods of 100 h to 1500 h on microstructure of Ni3Al-base single-crystal alloy IC6SX were examined by SEM, EDX and TEM. Results show that alloy IC6SX undergoes following microstructure changes during long-term aging: a large number of rod-like Y-NiMo phases and carbides precipitate, and more of them appear in the interdendritic areas than in the dendritic...
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