论文信息 - Design and development of hot

Design and development of hot

AbstractAs the first step to design and develop the new hot corrosion-resistant nickel-base single-crystal superalloys by thed-electrons alloy design theory (or the New PHACOMP), an evaluation of the phase stability of the modified hot corrosion-resistant IN738LC nickel-base superalloys (Ni-16Cr-9.5Al-4.0Ti-8.0-Co-0.55Nb-0.06Zr-0.05B-0.47C-(0~3)Ta-(0~3)W-(0~3)Mo (in atomic percent)) was conducted with the alloy design theory. The critical conditions for suppressing the precipitation of the brittle σ phase can be described by the electronic parameters $$\overline {Mdt} \leqslant 0.991$$ and $$\overline {Md\gamma } \leqslant 0.93$$ 0.93 which can be applied to thed-electrons alloy design of hot corrosion resistant nickel-base superalloys with high Cr contents.

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