✦ LIBER ✦

Effect of orientation on the microstructure of nickel-based crystalline superalloys

✍ Scribed by X. B. Zhao; L. Liu; S. F. Gao; B. M. Ge; J. Zhang; Y. L. Li; H. Z. Fu

Publisher: John Wiley and Sons
Year: 2011
Tongue: English
Weight: 359 KB
Volume: 46
Category: Article
ISSN: 0232-1300
DOI: 10.1002/crat.201100391

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✦ Synopsis

Abstract

The effect of crystal orientation on the microstructure of a nickel‐based crystalline superalloys during directional solidification was explored. Differently oriented crystals with [001] and [011] orientations were fabricated with seeding technique. The results showed that primary dendrite arm spacings decreased simultaneously with the increase of misroientation. The primary dendrites arrange in lines in [011] single crystal. For [001] oriented crystals, the size of γ′ phase increased with the increasing of misorientation. However, it was observed that the size of γ′ decreased with large misorientation for [011] orientated growth. Meanwhile, more γ′ in [011] crystals tended to be triangular. (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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