Acta Metallurgica Sinica (English Letters) ›› 1995, Vol. 8 ›› Issue (z1): 497-502.

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A　HIGH　PERFORMANCE　DS　CAST　Ni_3Al　BASE　ALLOY　FOR　ADVANCED　GAS　TURBINE　BLADES　AND　VANES

HAN Yafang (Institute of Aeronautical Materials, Beijing, 100095, China)CHATURVEDIMC(University of Manitoba Winnipeg, Manitoba, Canada, R3T2N2)   

  • 出版日期:1995-10-10 发布日期:2009-10-10

A HIGH PERFORMANCE DS CAST Ni_3Al BASE ALLOY FOR ADVANCED GAS TURBINE BLADES AND VANES

HAN Yafang (Institute of Aeronautical Materials, Beijing, 100095, China)CHATURVEDIMC(University of Manitoba Winnipeg, Manitoba, Canada, R3T2N2)   

  • Online:1995-10-10 Published:2009-10-10

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摘要： AHIGHPERFORMANCEDSCASTNi_3AlBASEALLOYFORADVANCEDGASTURBINEBLADESANDVANESHANYafang(InstituteofAeronauticalMaterials,Beijing,100095,China)CHATURVEDIMC(UniversityofManitobaWinnipeg,Manitoba,Canada,R3T2N2)Abstract:AhighperformanceNi-Al-Mo-BsystemcastNi_3Albasealloy,namedAlloyIC6,hasbeendevelopedforadvancedgasturbinebladesandvanes.Thealloyhashighstrengthandductilityfromroomtemperatureto1100℃aswel....

Abstract: A high performance Ni-Al-Mo-B system cast Ni_3Al base alloy, named Alloy IC6, has been developed for advanced gas turbine blades and vanes. The alloy has high strength and ductility from room temperature to 1100℃ as well as excellent creep resistance over a wide temperature range of 760℃ to 1100℃ . The superior mechanical properties of this alloy.may be attributed to (1) solid solution hardening by the large amount of Mo addition , (2)second phase strengthening by γ-phase and other minor phases that precipitate in various temperature ranges, (3) rearrangement of γ-phase in the form of raft structure during creep deformation , (4) high-density misfit dislocation networks at the γ /γ' interfaces that form due to a high value ofγ /γ ' misfit .

Key words: Ni_3Al Alloy, microstructure, mechnical properties