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nickel-base superalloy

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Published: 01 March 2002
Fig. 8.4 Nitrogen content vs. depth for Inconel nickel-base superalloy heated at 816 °C (1500 °F) in nitrogen More
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Published: 01 March 2002
Fig. 9.1 Hot crack in heat-affected zone of U-700 nickel-base superalloy after fusion melting More
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Published: 01 March 2002
Fig. 9.3 Postweld strain-age cracking in nickel-base superalloy X-750. Alloy was welded in the age-hardened condition and re-aged at 705 °C (1300 °F) More
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Published: 01 March 2002
Fig. 9.6 Minipatch welding tests on U-700 nickel-base superalloy showing the benefit of overaging on postweld heat treatment cracking, (left) solution heat treated, (right) overage heat treated More
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Published: 01 March 2002
Fig. 9.10 Microstructures produced in U-700 nickel-base superalloy to simulate portions of the heat-affected zone corresponding to the peak welding temperature More
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Published: 01 March 2002
Fig. 9.11 Composite micrograph of U-700 nickel-base superalloy showing location of extended heat-affected zone, noting partly melted regions and showing some hot cracking defects More
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Published: 01 March 2002
Fig. 9.12 Liquation of a NbC stringer in IN-718 nickel-base superalloy. (a) Stringer before onset of liquation, (b) initial stages of liquation, (c) movement of stringer liquation into grain boundaries of alloy More
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Published: 01 March 2002
Fig. 9.19 Welding information on Waspaloy nickel-base superalloy gas turbine shroud Joint type Butt Weld type Square-groove Welding process Automatic GTAW Power supply 200 to 300 A transformer-rectifier, constant current Torch Mechanical, water cooled Electrode More
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Published: 01 March 2002
Fig. 9.20 Bellows joint of IN-718 nickel-base superalloy showing welding information Conditions for GTAW Joint type Edge Weld type Three-member edge flange Fixture Rotating positioner Power supply 300 A transformer-rectifier Electrode 0.040 in. (1.02 mm) diam EWTh More
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Published: 01 March 2002
Fig. 10.4 Original (top left) tool design for A-286 iron-nickel-base superalloy and, (bottom left) improved tool design for Rene 41 to broach same slot (right) in a gas turbine (dimensions in inches) More
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Published: 01 March 2002
Fig. 12.2 Yield and ultimate strengths of U-720 nickel-base superalloy showing obvious peaking (a) and lack of peaking (b) for two different processing options More
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Published: 01 March 2002
Fig. 12.3 Strength (hardness) vs. particle diameter in a nickel-base superalloy. Cutting occurs at low particle diameters, bypassing at high particle diameters. Note also that aging temperature affects strength in conjunction with particle size. More
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Published: 01 March 2002
Fig. 12.6 Schematic of microstructure of B-1900 nickel-base superalloy as normally heat treated and after exposure of 2-10 h at successively higher temperatures. Irregular polygons represent γ′ and black zig-zag marks are intended to represent areas of incipient melting. More
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Published: 01 March 2002
Fig. 12.14 Micrographs of IN-718 nickel-base superalloy after receiving a high solution treatment at 1038 °C (1900 °F) for differing times. (a) 20 min at 1038 °C, showing presence of prior δ-phase grain boundary precipitates (arrows). 550×. (b) 1 h showing absence of prior δ phase particles More
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Published: 01 March 2002
Fig. 12.29 Rupture strength at 1020 °C (1868 °F) of a nickel-base superalloy as a function of cobalt content, showing a peak at about 13% Co More
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Published: 01 March 2002
Fig. 12.38 Fatigue crack growth rate behavior of IN-718 nickel-base superalloy tested in air at 649 °C (1200 °F) More
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Published: 01 March 2002
Fig. 12.43 Dependence of crack growth rate of Waspaloy nickel-base superalloy on γ′ size and grain size when tested at room temperature More
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Published: 01 March 2002
Fig. 12.46 Low-cycle fatigue behavior of IN 738 nickel-base superalloy in vacuum, air, and hot corrosion environments at 899 °C (1650 °F) and two cycling rates More
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Published: 01 March 2002
Fig. 12.47 Fatigue life of N-155 iron-nickel-base superalloy in the HCF range under reversed bending at various temperatures from room temperature to 816 °C (1500 °F) More
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Published: 01 March 2002
Fig. 12.53 Scatterbands for IN-738 PC cast nickel-base superalloy with and without HIP using Larson-Miller parameter (P LM ). Note: P LM = T (C + log t ) where C = Larson-Miller constant, T = absolute temperature, t = time in h. For this plot, C = 20, T = °R More