<111>17.6°-420°C 四分之 弧形 匀运 动 13.03.200613:58:38 300um+
<111> 17.6°——420°C 四分之 一弧形 均匀运 动
<100>14.3°-580°C 具有折 面的非 均匀运 动 03.05.200518:54:16 —100μm4
<100> 14.3°——580°C 具有折 面的非 均匀运 动
<100>8.4°-640°C 保持 直线 状态 04.05.200512:04:11 -100μmH
<100> 8.4°——640°C 保持 直线 状态
Grain Boundary properties ∑3≡60°<111> ●For example, Σ11=50°<110> FCC <110>tilt boundaries show 6 pronounced minima 5 in energy ●However,some 3 caution needed because the <100> 6311) series do not show 1 these minima. 0 0204060 80100120140160180 [dag] Fig.2.4.Dependence of the energy of symmetrical <110>tilt boundaries in Al on the tilt angle The indices given in the figure are Miller indices of the corresponding grain boundary planes (see text)(after [14])
Grain Boundary properties For example, FCC <110> tilt boundaries show pronounced minima in energy However, some caution needed because the <100> series do not show these minima. 3 60°<111> 11 50°<110>
CSL Grain Boundary Friedel explored CSL-like structures in a study of twins. Kronberg Wilson in 1947 considered coincidence patterns for atoms in the boundary planes(as opposed to the coincidence of lattice sites).Their atomic coincidence patterns for 22 and 38°rotations on the111 plane correspond to the∑13band∑7 CSL boundary types.Note the significance of coincidence in the plane of the boundary. Kronberg,M.L.and F.H.Wilson (1949),"Secondary recrystallization in copper",Trans.Met.Soc.AIME,185,501-514 (1947). Friedel,G.(1926).Lecons de Cristallographie(2nd ed.).Blanchard,Paris
CSL Grain Boundary Friedel explored CSL-like structures in a study of twins. Kronberg & Wilson in 1947 considered coincidence patterns for atoms in the boundary planes (as opposed to the coincidence of lattice sites). Their atomic coincidence patterns for 22° and 38° rotations on the 111 plane correspond to the 13b and 7 CSL boundary types. Note the significance of coincidence in the plane of the boundary. Kronberg, M. L. and F. H. Wilson (1949), “Secondary recrystallization in copper”, Trans. Met. Soc. AIME, 185, 501-514 (1947). Friedel, G. (1926). Lecons de Cristallographie (2nd ed.). Blanchard, Paris