E-viri
Recenzirano
-
Wang, Yiming; Aktaa, Jarir
Scripta materialia, October 2017, Letnik: 139Journal Article
Nano/ultra-fine grained W and W-1wt%La2O3 (80nm–320nm) were fabricated by high-pressure torsion after 2 turns at 300°C/200°C, 400°C, 550°C and 700°C. Distinct textures were observed by using electron backscattering diffraction. Deformed W primarily revealed {112}〈111〉, {110}〈112〉 and {110}〈001〉 components, whereas, deformed W-1wt%La2O3 exhibited mainly γ-fiber at lower process temperatures. The texture anisotropy of (112)1−1−1 and (112)111− pair was also investigated. Results showed that the stacking fault energy and process temperature were crucial in determining texture. Dynamic recrystallization was retarded by La2O3 addition under given conditions. Display omitted
