Fig. 12 Cleavage-fracture model showing fracture direction, cleavage planes, and low-angle grain or subgrain boundary. Source: Ref 9 More

Fig. 13 Cleavage fracture in a low-carbon steel, seen through an SEM. Cleavage fracture in a notched impact specimen of hot-rolled 1040 steel broken at –196 °C (–320 °F), shown at three magnifications. The specimen was tilted at an angle of 40° to the electron beam. The cleavage planes More

Fig. 2.34 Effect of quasi-cleavage—mixed cleavage and microvoid coalescence—on the fracture surface appearance of 17-PH stainless steel. TEM p-c replica, 4900× More

Fig. 35 Examples of cleavage fractures. (a) Twist boundary, cleavage steps, and river patterns in an Fe-0.01C-0.24Mn-0.02Si alloy that was fractured by impact. (b) Tongues (arrows) on the surface of a 30% Cr steel weld metal that fractured by cleavage. Source: Ref 18 More

Fig. 36 Cleavage fracture in Armco iron showing a tilt boundary, cleavage steps, and river patterns. Transmission electron microscopy replica. Source: Ref 18 More

Fig. 7.29 Cleavage fracture in soda lime glass. Crack progresses from left to right. (a) Fracture surface shows the initiation region (featureless mirror region), surrounded by the mist and hackle marks. (b) Geometry of a tensile test bar showing position of fracture surface normal to tensile More

Fig. 10.6 Fractograph revealing typical transgranular cleavage and ductile river markings and flutes associated with aqueous chloride SCC in α/β titanium alloys. Source: Ref 10.6 More

Fig. 18.22 Flutes and intergranular cleavage resulting from SCC of β-annealed Ti-8Al-1Mo-1V in methanol. Source: Ref 18.10 More

Fig. 5.10 SEM micrograph of a cleavage fracture surface on a 1018 steel. Original magnification 160× More

Fig. 13 Cleavage fracture in hardened steel showing numerous “river” marks. The overall direction of crack propagation is in the direction of the arrow (i.e., downstream). New river patterns are created where grain boundaries were crossed. 125×. More

Fig. 7 Cleavage fracture in hardened steel, viewed under the scanning electron microscope. Note progression of “river” marks in the direction of arrow. Grain boundaries were crossed without apparent effect. Original magnification at 2000× More

Fig. 12 Scanning electron micrograph of cleavage cracking More

Fig. 7 (a) Cleavage region observed in low-carbon steel. (b) Magnification of the region delimited by the rectangle in (a) showing an inclusion in the center of the cleavage region More

Fig. 2.30 Cleavage fracture from bend testing of 201 nickel in hydrogen atmosphere. (a) Ledgelike character of cleavage facets with small tongues on the bright facet (SEM, original magnification at 2000×). (b) Lower magnification view (original magnification at 500×) with higher-magnification More

Fig. 2.31 Cleavage fracture in Armco iron broken at −196 °C (−321 °F), showing river patterns, tongues, and (from bottom right to top left) a grain boundary. TEM p-c replica, 3000× More

Fig. 2.33 Cleavage fracture in a low-carbon martensitic steel. (a) Light microscope cross section with nickel plating at top showing the fracture profile. (b) Direct light photograph. (c) Direct SEM fractograph. (d) Light fractograph of replica. (e) SEM fractograph of replica. (f) TEM More

Fig. 2.35 Fracture model showing a cleavage step blending with a tear ridge in a quasi-cleavage fracture surface. At top left is the lower surface of a fracture, showing a step at the lower left and a ridge at the upper right. At right and at bottom are sections through the fractured member More

Fig. 2.36 Cleavage in a large second-phase particle on a fracture surface of A-286 steel More

Fig. 2.37 Quasi-cleavage in the surface of an impact fracture in a specimen of 4340 steel. The same area is shown in both SEM fractographs, but at different magnifications. The small cleavage facets in martensite platelets contain river patterns and are separated by tear ridges. Shallow More

Fig. 19.21 Flat cleavage facets and microvoids on fracture surface of 4340 steel containing 0.003% P and tempered at 350 °C (662 °F). Specimen was broken by impact loading at room temperature. Source: Ref 19.49 More