Microstructure and Texture of Zirconium and Titanium Grain Refined by Equal Channel Angular Pressing

Abstract:

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Zr702 and commercial purity Ti were grain refined through severe plastic deformation and their microstructure and texture characteristics were studied by optical microscopy, transmission electron microscopy, X-ray diffraction and electron back-scattered diffraction. The equal channel angular pressing was conducted at 350°C using a 90°/20° die. Up to 8 passes of pressing were performed via three different routes, A, C and BC, which resulted in reduction of the grain size down to 0.2-0.5.m. The two materials showed similar evolution characteristics of microstructure and texture. While the specimens pressed via route A showed lamellar grain shapes those via route C or BC exhibited equiaxed grains. A split basal texture was developed in the microstructure obtained by the route A pressing, which was similar to the cold rolling texture, whereas an asymmetric texture was produced in the specimens pressed via route BC. In the case of route C pressing, the texture characteristics were closer to those of the route BC case.

Info:

Periodical:

Materials Science Forum (Volumes 539-543)

Main Theme:

Edited by:

T. Chandra, K. Tsuzaki, M. Militzer , C. Ravindran

Pages:

86-91

DOI:

10.4028/www.scientific.net/MSF.539-543.86

Citation:

S. H. Yu et al., "Microstructure and Texture of Zirconium and Titanium Grain Refined by Equal Channel Angular Pressing", Materials Science Forum, Vols. 539-543, pp. 86-91, 2007

Online since:

March 2007

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$35.00

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