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GH6159


GH6159 alloy is a new type of high strength multiphase cobalt base superalloy developed on the basis of foreign multiphase cobalt base superalloy (MP alloy). Its main feature is that cold deformation can first induce the formation of cross-reticulated lamellar structure in face-centered cubic matrix ε Phase to prevent the long-range movement of dislocations and produce strengthening, and then precipitation of dispersed Ni3X phase after aging treatment to supplement strengthening. The alloy has comprehensive properties such as ultra-high strength, good plasticity and high stress corrosion resistance, and can still maintain its high strength characteristics at 650 ℃. The alloy can be widely used not only for high-temperature fastening bolts and other parts of aero-engine, but also for ultra-high strength fasteners of aircraft used in stress corrosion environment (such as marine atmospheric environment).

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