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자료유형
학술저널
저자정보
M. Wroński (AGH University of Science and Technology) K. Wierzbanowski (AGH University of Science and Technology) D. Wojtas (AGH University of Science and Technology) E. Szyfner (AGH University of Science and Technology) R. Z. Valiev (Ufa State Aviation Technical University) J. Kawałko (AGH University of Science and Technology) K. Berent (AGH University of Science and Technology) K. Sztwiertnia (Polish Academy of Sciences)
저널정보
대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.24 No.4
발행연도
2018.1
수록면
802 - 814 (13page)

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In the present work the properties of titanium grade 2 after ECAP processing with original route and regimes (route C, channelangle 𝛷 = 120°, deformation temperature 300 °C, number of passes up to 8) were examined. Texture development andmicrostructure parameters after ECAP processing and after recrystallization were determined using electron back scatterdiff raction and analysed. A signifi cant increase of the mechanical strength accompanied by some increase of ductility wasobserved in the deformed samples. The kernel average misorientation and average grain orientation spread were stronglyincreased after deformation, which confi rms the material refi nement and fragmentation. The proportion of low angle boundariesincreased after four ECAP passes, but after four consecutive passes high angle grain boundaries became predominant. Nodeformation twins were observed after four and eight ECAP passes. The material recrystallized after deformation retaineda fi ne grain microstructure. The textures of deformed and recrystallized samples were determined. It was found that textureafter 8 passes is more homogeneous that that after 4 passes, which partly explains higher ductility of this fi rst sample.

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