Paper Title:
Investigation on Dynamic Recrystallization Behavior in Hot Deformed Superalloy Inconel 718
  Abstract

The nucleation and development of dynamic recrystallization (DRX) in hot deformed superalloy Inconel 718 during uniaxial compression were investigated by optical microscopy and electron back-scattered diffraction (EBSD) technique. The results showed that the discontinuous dynamic recrystallization was the predominant DRX mechanism in this alloy. The variations of partial crystallographic orientations led to the individual nucleation inside the deformed grains, which implied the occurrence of local continuous dynamic recrystallization. The progressive subgrain rotation can be confirmed neither near the prior high angle grain boundaries nor within the original grains. It was found that, as the strain increased, the initial twin boundaries were gradually transformed to ordinary mobile high angle boundaries. Meanwhile, the new twin boundaries were formed inside the recrystallized grain necklaces. It was suggested that the characteristics of the twin boundaries evolution with increasing strain were associated with the transformation of initial twin boundaries as well as the generation of new ones, which resulted in the development of DRX.

  Info
Periodical
Materials Science Forum (Volumes 546-549)
Edited by
Yafang Han et al.
Pages
1297-1300
DOI
10.4028/www.scientific.net/MSF.546-549.1297
Citation
Y. Wang, W. Z. Shao, L. Zhen, L. Lin, Y.X. Cui, "Investigation on Dynamic Recrystallization Behavior in Hot Deformed Superalloy Inconel 718", Materials Science Forum, Vols. 546-549, pp. 1297-1300, 2007
Online since
May 2007
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Price
$32.00
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