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gas carburizing

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Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005799
EISBN: 978-1-62708-165-8
... Abstract This article describes the thermodynamics and kinetics of gas carburizing reactions, and details the mass transfer mechanism during gas carburizing. It discusses the various considerations involved in carburizing process planning, and reviews successful operation of the gas carburizing...
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Published: 01 August 2013
Fig. 8 Schematic of the gas atmosphere – steel interaction in gas carburizing. Source: Ref 42 More
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Published: 30 September 2014
Fig. 19 Schematic of a vacuum gas carburizing furnace More
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Published: 01 August 2013
Fig. 1 Performance of different stop-off techniques for gas carburizing. Local protection of 27 mm (1.06 in.) diameter specimen of 8620H steel against carbon pickup provided by stop-off paint (Condursal 0090) compared to copper plating More
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Published: 01 August 2013
Fig. 8 Schematic representation of the various steps in the gas carburizing process. This diagram is specific for gas carburizing. Source: Ref 1 More
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Published: 01 February 2024
Fig. 30 Runout of pinions; comparison between LPC and HPGQ and gas carburizing and oil quench More
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Published: 01 October 2014
Fig. 8 Lath martensite microstructure in core of gas-carburized type 8719 steel containing 1.06% Mn, 0.52% Cr, 0.50% Ni, and 0.17% Mo. Light micrograph. Source: Ref 20 More
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Published: 01 October 2014
Fig. 24 Internal oxidation (dark features) at surface of gas-carburized steel containing 1.06% Mn, 0.21% Si, 0.52% Cr, 0.50% Ni, and 0.17% Mo. Light micrograph. Source: Ref 20 More
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Published: 01 October 2014
Fig. 25 Internal oxidation of gas-carburized 20MnCr5 steel containing 1.29% Mn, 0.44% Si, 1.25% Cr, 0.25% Ni, and 0.0015% B. SEM micrograph. Source: Ref 61 More
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Published: 30 September 2014
Fig. 102 Intergranular oxidation of the surface of a gas-carburized steel along the prior grain boundaries. 1000×. Source: Ref 97 More
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Published: 01 January 1990
Fig. 8 Resistance to gas carburization at 980 and 1090 °C (1800 and 2000 °F). Test duration, 100 h More
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Published: 01 August 2013
Fig. 31 Fatigue limits of plasma- and gas-carburized parts as a function of retained austenite. Source: Ref 59 More
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Published: 01 January 2002
Fig. 8 Fatigue fracture in gas-carburized and modified 4320 steel showing overview of initiation, stable crack propagation, and unstable crack propagation, with extent of stable crack indicated by dashed line More
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Published: 01 December 2004
Fig. 4 Levels of retained austenite in gas-carburized and heat treated 4620 steel. All specimens carburized at 1.00% C potential for indicated time and temperatures. (a) 0% retained austenite (by x-ray) in matrix of tempered martensite with lower bainite and carbide. Carburized 8 h at 940 °C More
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Published: 01 December 2004
Fig. 6 Decarburization in 4118H steel bar, gas carburized 8 h at 925 °C (1700 °F), oil quenched, heated to 845 °C (1550 °F) and held 15 min, oil quenched, and tempered 1 h at 170 °C (340 °F). (a) Completely decarburized surface layer (white), a transition zone of ferrite and low-carbon More
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Published: 01 December 2004
Fig. 9 Transgranular initiation and propagation from bending fatigue of gas-carburized 8719 steel. Source: Ref 2 More
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Published: 01 December 2004
Fig. 13 Tempered martensite in gas-carburized 9310 steel. Specimens have different surface carbon contents because of variations in the carbon potential of the furnace atmosphere. Case carbon content is as follows. (a) 0.60% C. (b) 0.85% C. (c) 0.95% C. (d) 1.05% C. (e) 1.10% C. (f) 1.20% C More
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Published: 01 December 2004
Fig. 21 “Butterfly” structural alterations at microcracks in gas-carburized 8620 steel subjected to contact-fatigue loading. Specimen was gas carburized 11 h at 925 °C (1700 °F), furnace cooled to 845 °C (1550 °F), oil quenched, and tempered 2 h at 195 °C (380 °F). Specimen was subjected More
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Published: 01 December 2004
Fig. 25 “Butterfly” alterations at inclusions in gas-carburized 1039 roller steel after contact-fatigue testing. (a) Alterations in the center are approximately 0.1 mm (0.004 in.) below the contact surface. 1% nital etch. 750×. (b) Replica electron micrograph of butterfly alterations More
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Published: 01 January 1996
Fig. 15 Oxides (dark features) at surface of a gas-carburized 20 MnCr 5 steel containing 1.29% Mn, 0.44% Si, 1.25% Cr, 0.25% Ni, and 0.0015% B. SEM micrograph, More