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1. The grain refinement mechanisms of undercooled DZ125 superalloy melt were systematically investigated by the method of molten salt purification combined with cycled superheating.

2. The second moment creep time of DZ4 superalloy rapidly decreases with the increasing of temperature and stress.

3. NiCrAlY coatings were deposited on superalloy IC - 6 by arc ion plating ( AIP ) .

4. The undercooled DZ125 superalloy was investigated by the method of glass and molten salt purification combined with cycled superheating, the mechanism of purification by compound salt was discussed.

5. Non hafnium superalloy DZ 4 , which is widely applied in service aero engines in present, is introduced.

6. The fatigue behaviours of Superalloy GH901 under major combined with minor cycle have been systematically studied at room temperature using smooth specimen and sheet with center hole.

7. Directionally solidified superalloy 's elastic constants were analyzed by employing statistical and random sampling methods.

8. The results show that hydrogenation can refine the aging microstructure of superalloy.

9. A control - grain cast processing for integral turbine wheel of superalloy using mould agitation was successfully investigated.

10. The effects of foundry variables and refiners on dendrite structures, micro segregation, inclusion and microporosity of cast superalloy K4169 have been studied.

11. The anisotropy of compression creep strength in a nickel - base single crystal superalloy was investigated.

12. The effects of electric field treatment on the microstructure and deformation behavior of GH4199 superalloy were studied.

13. It is concluded that during the slow directional solidification, the meniscus surface of liquid metal at liquidus temperature can keep its morphology at room temperature for a superalloy.

14. The temperature field of electron beam welding(EBW) in heat-resisting superalloy was simulated based on fusion zone boundary principle by finite-element method.

15. Effect of mould holding temperature on the microstructure and mechanical properties of single crystal superalloy DD98 have been investigated.

16. In this paper, various influencing factors of the crack propagation rate of superalloy are concluded, including external factors and internal factors.

17. And the microcomputer system has beensuccessfully used in the investigation of DD 3 SC superalloy solidification process.

18. This paper systematically studied the interfacial actions between magnesian ceramic crucible and K3 superalloy melt in terms of interfacial wettability, penetration and chemical reaction.

19. Fusion zone occurred between seeds and single crystal in starter growth. The composition of mushy zone depended on the chemical composition of seeds and the single crystal superalloy.

20. A chemical analysis method for the determination of sulfate radical in molten salt corrosion product of Ni-base superalloy by barium sulfate turbidimetry was studied.

21. The changes in chemical composition, microstructure and mechanical properties of directionally solidified superalloy DZ125 during repeated remelting have been studied.

22. The critical deformation and forgeability of the spray formed superalloy were studied by wedge specimen and column specimen.

23. Experiment on stress rupture life of smooth and precracked superalloy specimens shows that small preexisting crack seriously reduces the stress rupture strength and life of superalloy components.

24. In this paper, effects of new grain refiners on dendrite structures,(http://sentencedict.com) microsegregation and precipitated phases of cast superalloy K4169 have been studied.

25. In this abstract, the considerable influence of absorbing properties of iron-nickel superalloy on the quality of dumet wire will be particularly investigated.