Static Recrystallization Behavior of Co-Ni-Cr-Mo Superalloy After Cold Rolling and Subsequent Heat Treatment

Takuma Otomo, Shingo Kurosu, Yunping Li, Hiroaki Matsumoto, Shigeo Sato, Yuichiro Koizumi, Kazuaki Wagatsuma, Akihiko Chiba

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

The recrystallization behavior of Co-33Ni-20Cr-10Mo (CNCM) superalloy due to heat treatment after cold rolling was studied. The alloy CNCM was cold-rolled up to 90% reduction. The deformed alloy was heat treated at 700 and 800°C. Microstructural evolution of the alloy was characterized by means of TEM, HRTEM, XRD and EBSD. The Goss <001> texture was dominantly formed after conventional cold rolling. The microstructure was refined after the cold rolling by the reduction higher than 70%. It is suggested that the refined structure was formed due to the strain induced grain subdivision during cold rolling. The average grain size after the recrystallization was submicron meter and the texture did not change after the recrystallization. It is indicated that the CNCM exhibits the continuous recrystallization behavior.

Original languageEnglish
Title of host publicationSupplemental Proceedings
Subtitle of host publicationGeneral Paper Selections
PublisherJohn Wiley and Sons Inc.
Pages479-483
Number of pages5
Volume3
ISBN (Electronic)9781118062173
ISBN (Print)9781118029473
DOIs
Publication statusPublished - 2011 May 3

Keywords

  • Co-Ni-Cr-Mo alloy
  • Deformation band
  • Dislocation
  • Static recrystallization
  • Suzuki effect
  • Twining

ASJC Scopus subject areas

  • Engineering(all)
  • Materials Science(all)

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