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carbonitriding

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0046195
EISBN: 978-1-62708-225-9
... hardened to a depth of 0.13 to 0.4 mm (0.005 to 0.015 in.) by carbonitriding. Specifications required that the part be carbonitrided, cooled, rehardened by quenching from 790 deg C (1450 deg F), then tempered at about 175 deg C (350 deg F). Visual examination, hardness testing, and metallographic...
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Published: 01 June 2019
Fig. 1 Carbonitrided 8617 steel pilot-valve bushing that fractured in fatigue because of improper heat treatment. Dimensions given in inches More
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Published: 01 December 2019
Fig. 13 SEM micrograph showing a titanium carbonitride and niobium carbide ( a ), dot mapping of titanium ( b ), and dot mapping of niobium ( b ) More
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Published: 01 December 2019
Fig. 14 SEM micrograph showing a string of titanium carbonitrides and niobium carbides ( a ), dot mapping of titanium ( b ), and dot mapping of niobium ( c ) More
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Published: 01 December 2019
Fig. 8 Case Microstructure of carbonitrided and hardened specimen Nital 3% ×100 More
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Published: 01 December 2019
Fig. 9 Core microstructure of carbonitrided and hardened specimen Nital 3% ×100 More
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Published: 01 December 2019
Fig. 10 Core microstructure of carbonitrided and hardened specimen Nital 3% ×500 More
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Published: 01 December 2019
Fig. 11 Hardness distribution for carbonitrided and hardened specimen More
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Published: 30 August 2021
Fig. 22 Retained austenite in 1018 steel carbonitrided at three different temperatures. Bar 28.5 mm (1.12 in.) in diameter quenched in 55 °C (130 °F) oil. More
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006816
EISBN: 978-1-62708-329-4
... that cause a part to fail during heat treatment. The article discusses the problems associated with heating and furnaces, quenching media, quenching stresses, hardenability, tempering, carburizing, carbonitriding, and nitriding as well as potential stainless steel problems and problems associated...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001759
EISBN: 978-1-62708-241-9
... solutions were identified and then validated based on chemical analysis, endurance and hardness tests, and microstructural examination. The investigation revealed that carbonitriding can effectively eliminate the type of failure encountered because it prevents through hardening of the bearing cup assembly...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0091754
EISBN: 978-1-62708-229-7
... collapse of the duct. Carbides and carbonitrides were found in all of the transitions examined. Investigation supported the conclusion that failure was caused by oxidation, oxide penetration, and oxide spallation which caused thinning of the duct wall. It was felt that the high oxygen and nitrogen partial...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006787
EISBN: 978-1-62708-295-2
... oxidation, carburization, metal dusting, nitridation, carbonitridation, sulfidation, and chloridation. Several other potential degradation processes, namely hot corrosion, hydrogen interactions, molten salts, aging, molten sand, erosion-corrosion, and environmental cracking, are discussed under boiler tube...
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Published: 01 December 2019
Fig. 8 SEM micrographs and spectrum diagram of inclusions ( a , d ) oxide inclusions and sulfide inclusion; ( b , e ) oxide inclusions, carbonitride inclusion, and sulfide inclusion; ( c , f ) oxide inclusions and sulfide inclusion More
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Published: 01 June 2019
Fig. 1 High-temperature degradation of a gas turbine transition duct. (a) Carbide, carbonitride precipitates, and oxide pentration along grain boundary. (b) Creep cracking along grain-boundary precipitates (arrows) on IN-617 panel. Creep cavities along grain boundaries link up and lead More
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Published: 01 January 2002
Fig. 2 High-temperature degradation of a gas turbine transition duct. (a) Carbide, carbonitride precipitates, and oxide pentration along grain boundary. (b) Creep cracking along grain-boundary precipitates (arrows) on IN-617 panel. Creep cavities along grain boundaries link up and lead More
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Published: 15 January 2021
Fig. 2 High-temperature degradation of a gas turbine transition duct. (a) Carbide, carbonitride precipitates, and oxide penetration along grain boundaries. (b) Creep cracking along grain-boundary precipitates (arrows) on IN-617 panel. Creep cavities along grain boundaries link up and lead More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001712
EISBN: 978-1-62708-234-1
... I.D. oxidation up to 3 mm, stemming from shrinkage porosity heavily spherodized, grey, primary carbonitrides O.D. surface decarburization with oxidation - 1 mm thick non-aligned creep voids throughout 1C similar to above 1F primary carbonitrides less heavily...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001787
EISBN: 978-1-62708-241-9
..., carbonitride inclusions, and sulfide inclusions by energy spectrum analysis including aluminum oxide, titanium carbonitride, and manganese sulfide Figure 8c , f shows an inclusion that appears round with diameter of 8 μm, as oxide inclusions and sulfide inclusion by energy spectrum analysis including...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001816
EISBN: 978-1-62708-241-9
... micrograph of the steel tested at 800 °C showing a ferrite–pearlite (ductile) decohesion The importance of decohesions is evident if the role of Ti and Nb carbides (or carbonitrides) is taken into account as these particles are not dissolved during the 800 °C test ( Fig. 12 ): These precipitates...