Fig. 3.2 Schematic illustration of creep-fatigue interaction when tensile creep occurring along grain boundaries is reversed by compressive plasticity occurring along crystallographic slip planes More

Fig. 5.14 Creep acceleration in interspersion creep-fatigue tests of normalized and tempered 2¼Cr-1Mo steel at 540 °C (1000 °F). (Data courtesy of Ref 5.21 . Source: Ref 5.22 More

Fig. 4.38. Creep-fatigue failure-mechanism map for 1Cr-Mo-V steel at 565 °C (1050 °F) ( Ref 134 ). More

Fig. 5.14. Creep-fatigue damage envelope for 2¼Cr-1Mo steel, from Code Case N-47 of the ASME Boiler and Pressure Vessel Code. More

Fig. 5.15. Bilinear creep-fatigue linear damage curve and validation of actual failures for a type 316 stainless steel component ( Ref 28 ). More

Fig. 3.13 Creep-fatigue cracking on H-13 tool steel at 593 °C (1100 °F) under PC-type loading. Source: Ref 3.3 More

Fig. 5.7 Predictability of creep-fatigue life using two techniques for experimentally partitioning creep and plastic strains for the method of strain-range partitioning. Source: Ref 5.15 More

Fig. 5.10 Correlation between creep-fatigue data and tentative universalized ductility-modified strain-rate partitioning life relationships for seven alloys. Data references in this figure are references found in Ref 5.18 . Source: Ref 5.18 More

Fig. 5.12 Comparison of observed and predicted cyclic creep-fatigue lives for two alloys based on predictions by the Ductility-Normalized Strain-Range Partitioning life equations. Source: Ref 5.19 More

Fig. 5.15 Comparison of predicted and experimental creep-fatigue results of interspersion tests performed for the Metals Properties Council ( Ref 5.21 ). (a) Normalized and tempered 2¼Cr-1Mo steel at 540 °C (1000 °F). (b) Quenched and tempered 2¼Cr-1Mo steel at 485 °C (900 °F). (c) Solution More

Fig. 6.1 Input information for treating creep fatigue by strain-range partitioning. (a) Partitioned strain-range life relationships. (b) Cyclic stress-strain curve and hysteresis loop for rapid cycling obtained by principle of double-amplitude construction. (c) Relationship between steady More

Fig. 6.8 Creep-fatigue lives predicted for cyclic total strain ranges from 2% to 0.05% for symmetric hold-times from 0.1 to 1000. Strain range is the parameter associated with each solid line. Dashed line represents a total time to failure of 30 years. Source: Ref 6.2 More

Fig. 8.2 Comparison of observed creep-fatigue lives of 16 high-temperature alloys with lives calculated by the 10% rule. Source: Ref 8.12 More

Fig. 8.14 Creep-fatigue-oxidation durability curves for coated single-crystal superalloy AM1 at 950 °C (1740 °F) for V σ = 0 ( R σ = −1). Source: Ref 8.63 More

Fig. 8.15 Creep-fatigue-oxidation durability curves for coated single-crystal superalloy AM1 at 1100 °C (2010 °F) for V σ = 0 ( R σ = −1). Source: Ref 8.63 More

Fig. 8.21 Simplified schematic illustration of the creep-fatigue interaction when tensile creep occurring along grain boundaries is reversed by compressive plasticity occurring along crystallographic slip planes. (a) Laboratory specimen. (b) Two deformation systems. (c) Grain-boundary sliding More

Fig. 9.46. Combined creep-fatigue data at 850 °C (1560 °) for IN 738 LC ( Ref 74 ). Data were generated using Δ ∊1 = 0.76%, hold times ranging from 100 to 2100 s, and stress levels of 250 and 400 MPa (36 and 58 ksi). More

Fig. 3.42 Schematic hysteresis loops encountered in isothermal creep-fatigue testing. (a) Pure fatigue, no creep. (b) Tensile stress hold, strain limited. (c) Tensile strain hold, stress relaxation. (d) Slow tensile straining rate. (e) Compressive stress hold, strain limited. (f) Compressive More

Fig. 3.43 Creep-fatigue interaction effects on the isothermal cyclic life of AISI type 304 stainless steel tested in air at 650 °C (1200 °F), normal straining rate of 4 × 10 3 /s. Source: Ref 3.38 More

Fig. 16.25 Schematic of cracking mechanisms with creep-fatigue interaction. (a) Fatigue cracking dominant. (b) Creep cracking dominant. (c) Creep damage influences fatigue crack growth. (d) Creep cracking and fatigue crack occur simultaneously. More