Fig. 38 (a) Pitting on this mold cavity (arrow) was observed after polishing of the AISI S7 plastic mold and was caused by the use of improper post-EDM procedures. (b) The classic appearance of such failures. There is a large, remelted surface layer above a reaustenitized, untempered zone More

Fig. 5 The metallographic specimen, 40B 1 , after polishing and etching showing a general view of the cracks that grew from the outside of the collector to the interior together with others growing in the opposite direction. Note the repair weld applied without total removal of the external More

Fig. 2 The grinding/polishing head of the Di-Profiler which is driven by the motor through a flexible shaft. More

Fig. 47 (a) Pitting on this mold cavity (arrow) was observed after polishing of the AISI S7 plastic mold and was caused by the use of improper post-electrical discharge machining procedures. (b) The classic appearance of such failures. There is a large, remelted surface layer above More

Fig. 69 Photograph of failed boiler tube showing polishing of the outer surface More

Fig. 24 Polished-and-etched cross section through the failed safe-end of the recirculation inlet nozzle. Note the intergranular nature of the failure. Etched in 8:1 phosphoric acid. 53× More

Fig. 19 Polished section through stress-corrosion cracks showing branching and intergranular cracking. See also Fig. 16 , 17 , and 18 . More

Fig. 5 Polished-and-etched core showing a fatigue crack in the beam flange. More

Fig. 13 Polished-and-etched section showing lack of fusion. More

Fig. 8 Macrographs of two polished sections from the failed axles. (a) Axle 1611. (b) Axle 2028. Each was positioned along the fracture at the outside-diameter surface. More

Fig. 11 Creep-induced failure of a boiler plate. (a) A polished cross section of the plate that shows necking, a feature of short-term creep. 2×. (b) Intergranular voids (dark areas) in an area near the fracture surface. Courtesy of B. Gabriel, Packer Engineering Associates, Inc. More

Fig. 35 Polished-and-etched cross section through the failed safe-end of the recirculation inlet nozzle. Note the intergranular nature of the failure. Etched in 8:1 phosphoric acid. 53× More

Fig. 14 Marks produced by a machined surface fretting against a polished flat More

Fig. 45 Second-phase cleavage fracture in Ti-6Al-4V. (a) Light micrograph of polished and etched surface. (b) SEM of fracture surface. Source: Ref 10 More

Fig. 16 Microstructure of forging lap in another ski lift grip component. As-polished. 111× More

Fig. 19 Micrograph of lap. As polished. 58× More

Fig. 7 Cross section of reduced wall thickness, as polished, showing general pitting (cratering) 50× More

Fig. 9 Optical macrograph of polished section under the fracture surface. More

Fig. 1 Longitudinal polished section through the thread of a ruptured screw, unetched. 7 × More

Fig. 2 Microstructure of forging lap in another ski lift grip component. As-polished. 111x More