Fig. 23 Corrosion fatigue of a Ti-6Al-4V alloy tested in ambient air. Intergranular cracking and fatigue striations are evident on the fracture surface; the grain appears to have separated from the rest of the microstructure. Source: Ref 21 More

Fig. 25 Effect of stress-intensity range and loading frequency on corrosion fatigue crack growth in ultrahigh-strength 4340 steel exposed to distilled water at 23 °C (73 °F) More

Fig. 27 Schematic showing the relationship among SCC, corrosion fatigue, and hydrogen embrittlement. Source: Ref 34 More

Fig. 62 Corrosion-fatigue cracks in carbon steel. A nital-etched section through corrosion-fatigue cracks that originated at hemispherical corrosion pits in a carbon steel boiler tube. Corrosion products are present along the entire length of the cracks. 250× More

Fig. 63 Failure of boiler tube wall due to corrosion fatigue cracking. (a) Wedge-shaped corrosion fatigue crack filled with corrosion product. As the cyclic process continues, this crack will eventually propagate through the tube wall. (b) A family of longitudinal corrosion fatigue cracks More

Fig. 7.120 Corrosion-fatigue-crack-growth rate as a function of stress-intensity range for a maraging steel in air and 3% NaCl solution. Source: Ref 171 More

Fig. 7.121 Corrosion-fatigue-crack-growth rate as a function of stress-intensity range for high-strength 4340M steel in vacuum and distilled water at 23 °C. Data for vacuum and indicated frequencies and R = 0. Source: Ref 172 More

Fig. 7.122 Corrosion-fatigue-crack-growth rate as a function of stress-intensity range for X-65 line pipe steel in air and in 3.5% NaCl solution under cathodic coupling to zinc. Cycled at indicated frequencies and R = 0.2. Coupled potential = –800 ± 10 mV (SHE). (Note: Original reference More

Fig. 7.123 Corrosion-fatigue-crack-growth rate as a function of stress-intensity range for X-65 line pipe steel in air and at the free corrosion potential in 3.5% NaCl at indicated frequencies and R = 0.2. Corrosion potential = –440 ± 30 mV (SHE). (Note: Original reference includes data More

Fig. 7.124 Corrosion-fatigue-crack-growth rate as a function of stress-intensity range for Ti-6Al-4V alloy in air and in 0.6 M NaCl at indicated frequencies and R = 0.1. Source: Ref 170 More

Fig. 7.125 Corrosion-fatigue-crack-growth rate as a function of stress-intensity range for a high-strength aluminum alloy in dry argon and indicated halide solutions. Source: Ref 173 More

Fig. 11 First-stage compressor blades that fractured due to corrosion fatigue originating in corrosion pits like those shown in Fig. 10 . Note that (a) had one fatigue origin (arrow) on the mid-pressure side (5×; shown at 70%). Arrows in (b) show fatigue origins on both the suction More

Fig. 33 Corrosion fatigue behavior of aluminum alloy 7079-T651 plate (S-L orientation). Temperature: 23 °C (73 °F); frequency: 4 cycles/s; stress ratio; R = 0. (a) Effect of stress intensity range on crack growth rate. K ICFC and a range of K ISCC are indicated at the bottom. (b More

Fig. 34 The varied effects of loading frequency on corrosion fatigue crack (CFC) propagation rate in peak aged 7075, 7017, 7475, and 7079 exposed to aqueous chloride solution (free corrosion) at constant Δ K and R . The fatigue crack is parallel to the plate rolling plane in the SCC More

Fig. 11 Corrosion fatigue of discontinuous silicon carbide/aluminum in moist salt air. Source: Ref 21 More

Fig. 3.38 Fracture surface of a corrosion fatigue crack in a rotating bending specimen of 2014-T6 aluminum alloy. (a) Optical photograph showing the origin and beach marks typical of fatigue fracture. (b) Microphotograph of a section through the fatigue origin (arrow). The fracture surface More

Fig. 24 Corrosion fatigue of a Ti-6Al-4V alloy tested in ambient air. Intergranular cracking and fatigue striations are evident on the fracture surface; the grain appears to have separated from the rest of the microstructure. Source: Ref 17 More

Fig. 26 Effect of stress-intensity range and loading frequency on corrosion fatigue crack growth in ultrahigh-strength 4340 steel exposed to distilled water at 23 °C (73 °F). Source: Ref 18 More

Fig. 5.62 Schematic diagrams showing three basic types of corrosion fatigue crack growth behavior. Source: Ref 5.77 More

Fig. 14.25 Effect of corrosion on fatigue performance More