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marquenching

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Published: 01 October 2011
, water, or polymer quenchants. (b) Marquenching, which uses either salt or hot oil as a quenchant. (c) Austempering, which uses a salt as a quenchant. (d) Isothermal quenching, which uses either salt or hot oil as a quenchant More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440001
EISBN: 978-1-62708-262-4
... of time to equalize the temperature throughout the piece. Minimizing distortion, cracking, and residual stress is the payoff. The term is not descriptive of the process and is better described as marquenching. The microstructure after martempering is essentially primary martensite that is untempered...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.pnfn.t65900185
EISBN: 978-1-62708-350-8
... steel but in some instances can be made from a heat-resisting stainless steel. Postwashing Treatments If the workpieces have been previously heat treated through salt baths such as neutral salts followed by a quench into a marquenching salt, thorough postwashing is necessary to prevent...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140117
EISBN: 978-1-62708-264-8
... martempering but sometimes called marquenching. Martempering is generally done by quenching into a molten salt bath at a temperature just above the M s temperature. The piece is held in the salt just long enough to equalize the temperature throughout, and then it is air cooled. Figure 12.2 shows...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060197
EISBN: 978-1-62708-261-7
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410487
EISBN: 978-1-62708-265-5
... a quenching severity somewhat lower than that of oil, and therefore, a steel for marquenching must have sufficient hardenability to compensate for the reduced rate of cooling in salt. The lower temperatures of modified martempering serve to increase quench severity, making it possible to use steels with lower...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310203
EISBN: 978-1-62708-326-3
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440125
EISBN: 978-1-62708-262-4
... The term “martempering” describes an elevated-temperature quenching procedure aimed at reducing cracks, distortion, or residual stresses. It is not a tempering procedure, as the name implies, and is more properly termed “marquenching.” Martempering of steel consists of (1) quenching from...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310163
EISBN: 978-1-62708-326-3
...). Source: Ref 9 Quenching Oils The general types of quenching oils are fast; conventional; and those that are more viscous and are used at higher operating temperatures for the austempering, martempering, or modified marquenching processes. Water oil emulsions represent a third type of oil...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240177
EISBN: 978-1-62708-251-8
... is sometimes more correctly referred to as marquenching. The time lapse before tempering is not as critical because the stress is greatly reduced. Formation of martensite occurs fairly uniformly throughout the workpiece during cooling to room temperature, thereby avoiding formation of excessive amounts...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1996
DOI: 10.31399/asm.tb.phtpclas.t64560235
EISBN: 978-1-62708-353-9
..., Materials Park, Ohio (1991), Ref 6 ) The term marquenching refers to a similar treatment for carburized steels, where the intermediate temperature is based on the M s temperature of the high carbon case. Austempering In austempering , the part is cooled in a molten salt or metal bath...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740271
EISBN: 978-1-62708-308-9
... more correctly referred to as marquenching. The time lapse before tempering is not as critical because the residual stresses are greatly reduced. Formation of martensite occurs fairly uniformly throughout the workpiece during cooling to room temperature, thereby avoiding formation of excessive amounts...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.mgppis.t60400245
EISBN: 978-1-62708-258-7
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060429
EISBN: 978-1-62708-261-7
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200327
EISBN: 978-1-62708-354-6
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.9781627082617
EISBN: 978-1-62708-261-7
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.mgppis.9781627082587
EISBN: 978-1-62708-258-7
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.sch6.9781627083546
EISBN: 978-1-62708-354-6