Mechanical Behavior of metallic Materials 4u (a) 4 (b) FIGURE 7.17 Microvoid coalescence under shear loading, which leads to"elongated dimple "morphology:(a)TEM fractograph shows"dimples""as raised parabolas;(b) SEM fractograph shows"dimples' as true elongated troughs. ③千大
Mechanical Behavior of Metallic Materials
Materials 02=03 (a) ○ (b) 剑 (c) 唐火学
Mechanical Behavior of Metallic Materials
Mechanical Behavior of metallic Materials (a) 2 4从 FIGURE 7.19 Cleavage fracture in a low-carbon steel. Note parallel plateau and ledge morphology and river patterns reflecting crack propagation along many parallel cleavage lanes.(a) TEM;(b) SEM. BCC, HCP, ionic and covalently bonded crystals ③大季
Mechanical Behavior of Metallic Materials BCC, HCP, ionic and covalently bonded crystals
Mechanical Behavior of metallic Materials 2 u 2 u FIGURE 7.20 Cleavage facets revealing fine-scale height elevations caused by localized deflection of the cleavage crack along twin-Imatrix interfaces:(a) TEM:(b) SEM ③大季
Mechanical Behavior of Metallic Materials
Mechanical Behavior of metallic Materials 5μ 5 FIGURE 7.21 Intergranular fracture in maraging steel tested in the gaseous hydrogen environment: (a) TEM; (b)SEM Crack prefers to follow the grain surfaces ③大季
Mechanical Behavior of Metallic Materials Crack prefers to follow the grain surfaces