Effect of Co content on microstructure and stress rupture properties of DD15 single crystal superalloy
Effect of Co content on microstructure and stress rupture properties of DD15 single crystal superalloy
- New search for: SHI Zhenxue
- New search for: LIU Shizhong
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- New search for: SHI Zhenxue
- New search for: LIU Shizhong
- New search for: YUE Xiaodai
- New search for: WANG Zhicheng
- New search for: LI Jiarong
DD15 single crystal superalloys with 9%Co and 12%Co were prepared in a directionally solidified furnace. By keeping the other alloying element contents unchanged, the influence of Co content on the microstructure, phase stability and stress rupture properties of the single crystal superalloy under the condition of 980 ℃/300 MPa was investigated. The results show that the primary dendrite arm spacing increases and the volume fraction of γ/γ′ eutectic decreases with increasing of Co content. The size of γ′ phase has no obvious change, its cubic shape turns a little irregular, its volume fraction decreases with increasing of Co content. The microstructure stability of the alloy increases with increasing of Co content. Increasing Co content decreases the stress rupture properties of the alloy.
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Effect of Co content on microstructure and stress rupture properties of DD15 single crystal superalloy
2020
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Electronic Resource
Unknown
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