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研究了GH169合金DA涡轮盘在680℃温度下长期时效时,盘件显微组织及其拉伸性能的变化规律,680℃时效超过500h后,将引起盘件组织和性能的变化。
The variation of the microstructure and tensile properties of the GH169 alloy DA turbine disc at 680 ℃ for a long time was studied. The microstructure and properties of the disk were changed at 680 ℃ for more than 500h.