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- W3147385594 abstract "The Ni3Al+Ni7HfZ unidirectionally soliditied lamellar eutectic has been studied to improve the transversal ductility and interface-thermal-stability of the ordinary eutectic composites in situ. The microstructure of Ni-5.8Al-32Hf (mass fraction,%) alloy was investigated in detail by means of metallography, transmission electron microscopy (TEM) and electron probe. The solidification behaviour of Ni3Al+Ni7Hf2 eutectic alloy was investigated at different temperature gradient (G) and solidilication rate (R). The results show that Ni-5.8Al-32Hf alloy with Ni3Al+Ni7Hf2 eutectic structure is considered to be the proper compositon. Some brittle β-NiAl phase in the alloy can be avoided by decreasing soliditied rate. Melting range of the alloy above mentioned composition is 41℃ determined by DTA. The critical value of G/R for NisAl+Ni7Hf2 eutectic is 5×105 ℃·s/cm2, and the lamellar Ni3Al+Ni7Hf2 eutectic aligned parallel to the direction of solidilication was obtained under R=5μm/s and G=250℃/cm." @default.
- W3147385594 created "2021-04-13" @default.
- W3147385594 creator A5077006924 @default.
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- W3147385594 date "1998-01-01" @default.
- W3147385594 modified "2023-09-23" @default.
- W3147385594 title "MICROSTRVCTURE AND SOLIDIFICATION BEHMIOUR OF Ni_3Al/Ni_7Hf_2 EUTECTIC ALLOY" @default.
- W3147385594 hasPublicationYear "1998" @default.
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