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4150

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Published: 01 January 1990
Fig. 5 Light micrograph showing patches of upper bainite (dark) formed in 4150 steel partially transformed at 460 °C (860 °F). Courtesy of F.A. Jacobs More
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Published: 01 August 2013
Fig. 18 Light micrograph showing patches of (a) upper bainite formed in 4150 steel partially transformed at 460 °C (860 °F) and (b) lower bainite (dark plates) in 4150 steel (nital etch). Courtesy of F.A. Jacobs ( Ref 25 ) More
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Published: 01 January 1989
Fig. 22 External cylindrical grinding of 4150 steel at 23 HRC using CBN-electroplated wheels. An oil coolant was used with V S of 57 m/s (11,200 sfm). Wheel grit sizes: A, 36 grit; B, 80 grit. (a) Workpiece metal removal rate plotted against normal force to obtain metal removal parameter More
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Published: 01 January 2002
Fig. 13 A dual-dimple size observed in a 4150 steel. Material was isothermally transformed at 190 °C (375 °F) and was not tempered. Tested as a Charpy V-notch specimen at 0 °C (30 °F). Source: Ref 30 More
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Published: 01 January 2002
Fig. 70 Brittle fracture in a 4150 steel. Material has been isothermally transformed at 300 °C (570 °F) from a Charpy V-notched specimen fractured at room temperature. Brittle fracture facets within larger regions, which were probably prior austenite grains. Source: Ref 30 More
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Published: 01 January 2002
Fig. 27(a) AISI 4150 alloy steel chuck jaw that broke because of the presence of a brittle white-etching nitride surface layer. The part was hardened and tempered before nitriding. A micrograph of a broken tooth (arrows) of this chuck jaw is shown in Fig. 27(b) . More
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Published: 01 December 1998
Fig. 24 Microstructure at the surface of a heavily nitrided AISI 4150 alloy steel that was heat treated prior to nitriding. Note the heavy iron nitride “white” layer and grain-boundary penetration at the surface. 4% picral, 200× More
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Published: 15 December 2019
Fig. 1 Depth of electroless nickel plating on AISI 4150 alloy steel as a function of time at 95 °C (205 °F) More
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Published: 30 August 2021
Fig. 27 (a) AISI 4150 alloy steel chuck jaw that broke because of the presence of a brittle white-etching nitride surface layer. The part was hardened and tempered before nitriding. (b) Micrograph of surface of broken chuck jaw tooth. The white layer at the surface is brittle iron nitride More
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Published: 15 January 2021
Fig. 13 Dual-dimple size observed in 4150 alloy steel. Material was isothermally transformed at 190 °C (375 °F) and was not tempered. Tested as a Charpy V-notch specimen at 0 °C (32 °F). Source: Ref 30 More
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Published: 15 January 2021
Fig. 31 Radial marks on tensile test specimen of SAE 4150 alloy steel isothermally transformed to bainite, quenched to room temperature, and tempered. (a) Lower bainite, isothermally transformed at 300 °C (570 °F) for 1 h, tempered at 600 °C (1110 °F) for 48 h. (b) Lower bainite, isothermally More
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Published: 15 January 2021
Fig. 70 Brittle fracture in a 4150 alloy steel. Material has been isothermally transformed at 300 °C (570 °F) from a Charpy V-notched specimen fractured at room temperature. Brittle fracture facets are evident within larger regions, which were probably prior-austenite grains. Source: Ref 30 More
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Published: 01 January 1990
Fig. 6 Light micrograph showing lower bainite (dark plates or needles) formed in 4150 steel. Courtesy of F.A. Jacobs. More
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Published: 01 January 2002
Fig. 26 Debonding at the interface of a carbide particle and the matrix in a bainitic 4150 steel. Loading direction indicated. Source: Ref 42 More
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Published: 15 January 2021
Fig. 27 Debonding at the interface of a carbide particle and the matrix in a bainitic 4150 steel. Loading direction indicated. Source: Ref 18 More
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Published: 30 September 2014
Fig. 96 Crack originating from silicate and sulfide inclusions in quenched and tempered AISI 4150 steel. 100×. 2% nital. Source: Ref 39 More
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Published: 01 August 2013
Fig. 31 Room-temperature Charpy V-notch impact energy versus tempering temperature for 4130, 4140, and 4150 steels austenitized at 900 °C (1650 °F) and tempered 1 h at temperatures shown. Source: Ref 42 More
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Published: 01 January 2002
Fig. 44 Light micrographs comparing images made with (a) a replica, using DIC illumination, and (b) a direct micrograph, using bright-field illumination, of a heavily nitrided AISI 4150 chuck jaw etched with nital. Note that the replica does not reveal the crack and is a mirror image More
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Published: 15 January 2021
Fig. 17 Light micrographs comparing images made with (a) a replica, using differential interference contrast illumination, and (b) a direct micrograph, using bright-field illumination, of a heavily nitrided AISI 4150 chuck jaw etched with nital. Note that the replica does not reveal the crack More
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Published: 01 January 1987
Fig. 375 Reversed torsional fatigue fracture of splined shaft due to overtempering. The SAE 4150 part was oil quenched and tempered to 34 HRC throughout—a hardness too soft for the application. Note the “starry” pattern characteristic of multiple fatigue cracks. 3.5× (D. Roche and H.H More