Observation of twins in polycrystalline cobalt containing face-center-cubic and hexagonal-close-packed phases

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)8145-8149
Journal / PublicationMaterials Science and Engineering A
Volume528
Issue number28
Publication statusPublished - 25 Oct 2011
Externally publishedYes

Abstract

The microstructure of a polycrystalline Co annealed at 873. K, followed by furnace cooling to room temperature, was studied in this paper. It was found that a small amount of high temperature (above 690. K) face centered cubic (FCC) phase is retained after the slow cooling, and there is a Shoji-Nishiyama orientation relationship between the low temperature hexagonal close packed (HCP) and the retained FCC phases. Annealing twins were observed not only in FCC phase but also in HCP phase. A high fraction of special misorientation, 71.4°/(12̄10), was identified in the HCP phase, which was correlated to the phase transformation twins. © 2011 Elsevier B.V.

Research Area(s)

  • Cobalt, Phase transformation, Twin

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