Influence of Deformation Substructures on the Early Mechanisms of Recrystallization in Cold-Rolled Titanium and Zirconium

N. Dewobroto; Nathalie Bozzolo; Francis Wagner

doi:10.4028/www.scientific.net/MSF.495-497.711

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HomeMaterials Science ForumMaterials Science Forum Vols. 495-497Influence of Deformation Substructures on the...

Influence of Deformation Substructures on the Early Mechanisms of Recrystallization in Cold-Rolled Titanium and Zirconium

Abstract:

The mechanisms governing the very first stage of static recrystallization in two hexagonal alloys (commercially pure titanium and low alloyed zirconium) are investigated in this paper. Initially fully recrystallized and equiaxed materials were cold-rolled to 80% thickness reduction and subsequently recrystallized at 500°C for short times. High resolution EBSD maps were acquired in a FEG-SEM before and after annealing in order to see where and how the new grains appear. Nonoriented nucleation mechanisms are involved in both materials, and there is a strong correlation between the local deformation substructures and the recrystallization kinetics. Recrystallization is extremely fast in the areas where the deformation cells are small and highly misoriented, i.e. in the areas which underwent severe grain fragmentation. Twinning plays an important role for that purpose in the studied titanium sheet.

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Periodical:

Materials Science Forum (Volumes 495-497)

Pages:

711-718

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.495-497.711

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Online since:

September 2005

Authors:

N. Dewobroto, Nathalie Bozzolo, Francis Wagner

Keywords:

Deformation Substructures, Microstructure, Recrystallization, Texture, α-Titanium Polycrystal, α-Zirconium

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References

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