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carbonitrided steel

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Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005927
EISBN: 978-1-62708-166-5
... fluidized-bed technique. Fig. 11 Comparison of hardness profiles obtained by fluidized-bed and conventional gas carburizing. SAE 8620 steel, rehardened from 820 °C (1510 °F). Source: Ref 3 The essential advantage of fluidized-bed carburizing and carbonitriding, but in particular of the...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003197
EISBN: 978-1-62708-199-3
... names: ferritic nitrocarburizing and carbonitriding. Carbonitriding is performed with the steel in an austenitic phase, above 760 °C (1400 °F). Ferritic nitrocarburizing is performed in the ferritic range, below 675 °C (1250 °F). Fig. 18 Microstructure (a) of a plasma nitrocarburized plain carbon...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003090
EISBN: 978-1-62708-199-3
... Fig. 1 and is microalloyed with vanadium and/or niobium for strengthening. ( Microalloying is a term used to describe the process of using small additions of carbonitride forming elements—titanium, vanadium, and niobium—to strengthen steels by grain refinement and precipitation hardening.) Fig...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005956
EISBN: 978-1-62708-166-5
... Abstract The process of case hardening of steel includes three consecutive steps of heat treatment: heating; the thermochemical process with the enrichment of the surface area during the carburizing or carbonitriding stage with carbon and nitrogen; and the subsequent quenching process for...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003091
EISBN: 978-1-62708-199-3
... Abstract This article presents a detailed account on the process flow, composition, alternative sources, and the advancement of ironmaking, steelmaking and secondary steelmaking practices. Some steels, such as bearing steels, heat-resistant steels, ultrahigh strength missile and aircraft steels...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005673
EISBN: 978-1-62708-198-6
... increases strength and hardness, as long as carbide formation does not occur (in cast iron) ( Ref 12 ). Vanadium is a strong carbide former and increases yield strength with a corresponding loss of ductility (in austenitic manganese steels). Vanadium carbonitrides are very stable ( Ref 13 ). The density...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005950
EISBN: 978-1-62708-166-5
... phenomena and the determination of related heat transfer boundary conditions. Because the focus is on aerospace alloys, in which the effects of phase transformations are usually considered negligible in simulation of distortion and residual stresses, the section on simulation of steel quenching processes in...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003195
EISBN: 978-1-62708-199-3
... Abstract This article presents an outline of the physical metallurgical principles that are associated with heat treating of steels. It describes the iron-carbon phase diagram and various types of transformation diagrams, including isothermal transformation diagrams, continuous heating...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003094
EISBN: 978-1-62708-199-3
..., or 20 to 24 ksi), high elongation (41 to 45%), and good deep drawability. With the addition of carbonitride-forming elements, the deep drawability and the nonaging properties are further improved. Bake-hardening (BH) steels are characterized by their ability to exhibit an increase in yield...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003245
EISBN: 978-1-62708-199-3
.... NITRIDED STEELS require special preparation. Techniques described in the first part of this section are oriented primarily toward preparation of specimens from carburized and carbonitrided steels, although they are also applicable to preparation of specimens from cyanided steels. CARBON AND ALLOY...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001306
EISBN: 978-1-62708-170-2
... the rapid diffusion of carbon through the interconnected porosity. Therefore, atmosphere carbon potentials need to be somewhat higher than those required for wrought steels of similar composition. Carbonitriding is probably the more common case-hardening treatment used on P/M parts. Here process...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003104
EISBN: 978-1-62708-199-3
... hardened carbon or low-alloy steels , either through hardened or surface hardened by induction or flame Low-carbon or low-alloy steels that are surface hardened by carburizing, cyaniding, or carbonitriding Medium-carbon chromium or chromium-aluminum steels that are hardened by nitriding...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003100
EISBN: 978-1-62708-199-3
... or carbonitride-forming elements such as niobium, vanadium, and/or titanium for precipitation strengthening, grain refinement, and possibly transformation temperature control As-rolled pearlitic steels , which may include carbon-manganese steels but which may also have small additions of other...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001305
EISBN: 978-1-62708-170-2
... Abstract Passivation; pickling, that is, acid descaling; electropolishing; and mechanical cleaning are important surface treatments for the successful performance of stainless steel used for piping, pressure vessels, tanks, and machined parts in a wide variety of applications. This article...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000607
EISBN: 978-1-62708-181-8
... Abstract This article is an atlas of fractographs that helps in understanding the causes and mechanisms of fracture of high-carbon steels and in identifying and interpreting the morphology of fracture surfaces. The fractographs illustrate the following: torsional fatigue fracture, hydrogen...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003246
EISBN: 978-1-62708-199-3
... unique combinations of properties, such as a strong and highly wear-resistant surface on a more-ductile, lower-strength core. The most common treatments used to produce these effects are carburizing, nitriding, and carbonitriding. These practices are usually applied to low- or medium-carbon steels...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003995
EISBN: 978-1-62708-185-6
... as a grain-growth inhibitor in “normalized” steels, via the formation of AlN. It is, however, not as effective as titanium in hot rolling because of the much higher solubility of AlN. In fact, it has a solubility that is not dissimilar to niobium carbonitride, and so could contribute to pancaking...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003991
EISBN: 978-1-62708-185-6
... microalloy steels, with a medium-carbon content (0.35 to 0.50% C) and additional strengthening through vanadium carbonitride precipitation. The parts were subjected to accelerated air cooling directly from the forging temperature. The AISI grade 1541 microalloy steel with either niobium or vanadium has been...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003174
EISBN: 978-1-62708-199-3
... Abstract Cast iron, which usually refers to an in situ composite of stable eutectic graphite in a steel matrix, includes the major classifications of gray iron, ductile iron, compacted graphite iron, malleable iron, and white iron. This article discusses melting, pouring, desulfurization...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005414
EISBN: 978-1-62708-196-2
... interest and to avoid vanadium carbonitride, V(CN), and aluminum nitride, AlN, reprecipitation ( Ref 16 ). A variety of techniques can be used to metallographically measure the prior-austenite grain size after each test. A common approach with hypoeutectic steels it to treat the sample so as to form...