Search Results for specimen polishing

Fig. 73 Fatigue crack appearance in an austenitic stainless steel specimen polished before fatigue loading, revealing slip lines on surfaces associated with crack formation and growth. Arrows indicate the direction of crack growth. 52× More

Fig. 37 Fatigue crack appearance in an austenitic stainless steel specimen polished before fatigue loading, revealing slip lines on surfaces associated with crack formation and growth. Arrows indicate the direction of crack growth. Original magnification: 52× More

Fig. 21 Effect of load applied to the specimen in vibratory polishing of low-carbon steel. Specimens were rough polished on 1 μm diamond and finish polished for 4 h on 0.1 μm Al 2 O 3 suspended in a 2-to-1 mixture of propylene glycol and water. (a) Using a 40 g load. (b) Using a 70 g load. (c More

Fig. 24 Polishing the gage edges of a flat fatigue specimen using a handheld buffing tool More

Fig. 11 Polishing wheel and specimen movement More

Fig. 11 Effects of various grinding and polishing stages on the specimen surface. (a) The rolling action of diamond particles on a hard lap surface during planar grinding produces a flat specimen with a minimal amount of damage to the coating. (b) During fine grinding, rotating the specimen More

Fig. 9 Mounted specimen in a hand vise ready for polishing More

Fig. 10 Polishing wheel showing specimen weighting for feathering the sample plane More

Fig. 4 Mount with two specimens for manual polishing or polishing on a semiautomated polisher with a non-fixed specimen mover plate More

Fig. 27 Effect of different abrading and polishing techniques on the appearance of oxide scale on high-purity iron. (a) Specimen abraded on 400-grit silicon carbide paper; numerous chipping artifacts are present in the oxide. (b) Specimen abraded on a fine fixed-abrasive lap; minor chipping More

Fig. 33 Variation in polishing rate in a semiautomatic machine with type of polishing cloth and particle diameter of polycrystalline diamond abrasives. The specimen polished was a ferritic steel (hardness, 700 HV), and the specimen pressure was 43 kPa. Courtesy of K. Geels, Struers A/S. Source More

Fig. 7 Effect of polishing on pore opening in a pressed-and-sintered Fe-0.8C alloy: interior of same specimen as in Fig. 6 After 2 min of polishing, there are numerous smeared pores. Compare the amount of porosity with Fig. 6 This micrograph shows how the inner part of a specimen polishes More

Fig. 29 Effect of pH of suspending liquid in the final polishing of specimens of galvanized iron. (a) Using a good-quality tap water. (b) Using a buffer solution with a pH of 7. The severe etching of the coating in (a) occurred as the result of electrochemical differences between the zinc More

Fig. 23 Mechanically twinned hafnium weld. Specimen was attack polished and heat tinted (∼400 °C, or 750 °F). Polarized light illumination. 60×. (P.E. Danielson) More

Fig. 6 Microstructure of wrought pure hafnium, with an as-polished specimen viewed in polarized light plus sensitive tint, revealing an equiaxed alpha hexagonal close-packed grain structure. A few mechanical twins can be seen at the surface (arrows). The magnification bar is 100 μm long. More

Fig. 4 Same as in Fig. 3 but close to the center of the specimen. As-polished. 100× More

Fig. 23 As-polished surfaces of (a) AM60 and AZ91D pressure die cast specimens prepared using Masterprep alumina for the final step. Courtesy of G.F. Vander Voort, Buehler Ltd. More

Fig. 34 Microstructure of the interfaces between specimens mounted, polished, and etched in a steel clamp. Note the excellent edge retention. 2% nital etch. Original magnification 100× More

Fig. 1 Surface profiles of a polished steel specimen obtained using white light interferometry. (a) Surface map. (b) Line profile along XX . (c) Line profile along YY More

Fig. 11 An automatic single-specimen grinder/polisher More