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delayed quenching

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130395
EISBN: 978-1-62708-284-6
... …  High soaking time Low surface hardness  Oxidizing atmosphere Decarburization  Decarburizing atmosphere Oxidation  Carburizing atmosphere Excess growth  High nitrogen potential Shrinkage  Masking of products …  Delayed quench Carbide network in case  Hot oil quench...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120055
EISBN: 978-1-62708-269-3
... decomposition of the beta phase present at the end of solution treating is minimized. The above quench agents provide the cooling rates necessary to prevent decomposition of beta. The need for rapid quenching is emphasized by requirements of short quench delay times. Some alpha-beta alloys can only tolerate...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.aacppa.t51140061
EISBN: 978-1-62708-335-5
... to the steps required to achieve the highest postquench degree of retained solution. Rapid cooling from solution temperature to room temperature is critical, difficult, and often the least-controlled step in thermal processing. Specifications often define or recommend quench delay limits. In practice...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.aacppa.t51140193
EISBN: 978-1-62708-335-5
.... Stephens, Ed., SP-760, Society of Automotive Engineers, 1988 Fig. D3.22 A356.0-T6 aluminum casting, tensile stress-strain curves, various casting processes Effect of molding process. Heat treatment, 12 h at 538 °C (1000 °F), water quench, 12–24 h delay at room temperature, 3 h at 154 °C (310 °F...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090317
EISBN: 978-1-62708-266-2
..., however, the consequences can be more dramatic than simple decreases in tensile ductility. Residual stresses introduced by quenching or welding frequently cause delayed cracking in dilute alloys that contain excessive concentrations of internal hydrogen, or even in materials of low hydrogen content when...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130043
EISBN: 978-1-62708-284-6
... Initiation and Delayed Failure in Steel , Trans. TMS-AIME , Vol 212 , 1958 , p 528 – 536 60. “ Release of Hazardous Materials from Cargo Tank in Middletown, Ohio, on August 22, 2003, ” Accident DCA03MZ002, NTSB Hazardous Materials Accident Brief, Adopted July 22 , 2004 61. Loginow A.W...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480075
EISBN: 978-1-62708-318-8
... with these processes, explaining how and why they occur and how they are typically controlled. It makes extensive use of phase diagrams and cooling curves to illustrate the effects of alloying and quenching on beta-to-alpha transformations and the conditions that produce metastable phases. It also examines several...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130255
EISBN: 978-1-62708-284-6
... can be instantaneous upon quenching, or they may be delayed. Also, some components may be crack-free, whereas seemingly identical components may have cracked. Delayed quench cracks can be the result of additional transformation of retained austenite in steel. This occurs when heavily stressed retained...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140133
EISBN: 978-1-62708-264-8
... after the room-temperature delay is significantly less than would have occurred if the steel had been quenched to the cold temperature with no room-temperature delay. A direct quench to the cold temperature, T c , produces no retained austenite for this steel, but after the room-temperature delay, 10...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130351
EISBN: 978-1-62708-284-6
...), and heat treatment (distortion, decarburization, and quench cracking). Care is needed to protect and inspect these high-value and safety-critical steel components. The following case histories illustrate typical failures experienced by these high-strength steels. The case histories in this chapter...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050191
EISBN: 978-1-62708-311-9
... the coil’s electrical connections from the medium-frequency power supply to the RF power supply. The static heating cycle for a gear run by this system includes ( Ref 6 ): Load position Scan up to preheat position Preheat 3 s Delay to RF 3.5 s RF heat 0.16 s Quench on, no delay (polymer...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240177
EISBN: 978-1-62708-251-8
..., formability, and machinability. This chapter discusses various heat treatment processes, namely annealing, stress relieving, normalizing, spheroidizing, and hardening by austenitizing, quenching and tempering. It also discusses two types of interrupted quenching processes: martempering and austempering...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310163
EISBN: 978-1-62708-326-3
... Abstract This chapter discusses the processes involved in the heat treatment of steel, namely austenitizing, hardening, quenching, and tempering. It begins with an overview of austenitizing of steels by induction heating, followed by a discussion on the processes involved in transformation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ahsssta.t53700135
EISBN: 978-1-62708-279-2
... hot rolling at 900 °C (1650 °F), then annealing at 1150 °C (2100 °F), followed by quenching with nitrogen gas. Thermal treatment of alloys usually affects the room-temperature microstructure and the phase transformation process. However, early research on TWIP Fe-29Mn, TWIP Fe-30Mn, and TWIP Fe-31Mn...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.aceg.t68410215
EISBN: 978-1-62708-280-8
..., it is not widely applied, compared to solidification analysis. The critical control factors are solutionizing temperature and time, quench delay, and quench water temperature and control. Wheels are precipitation-hardened (aged) in batch-type gas-fired ovens, using the same baskets or racks used...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130285
EISBN: 978-1-62708-284-6
... G.R. , Trans. Metall. Soc. Am. Inst. Mech. Eng. , Vol 245 ( No. 12 ), 1969 , p 2553 – 2564 7. Narazaki M. , Totten G.E. , and Webster G.M. , Hardening by Reheating and Quenching , Handbook of Residual Stress and Deformation , Totten G.E. , Howes M...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410439
EISBN: 978-1-62708-265-5
... shortness associated with copper and overheating and burning as occur during forging. It addresses various types of embrittlement, including quench embrittlement, tempered-martensite embrittlement, liquid-metal-induced embrittlement, and hydrogen embrittlement, and concludes with a discussion on high...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440001
EISBN: 978-1-62708-262-4
... in ultrarapid cooling. The term describes an interrupted quench from the austenitizing temperature of certain alloy, cast, tool, and stainless steels. The concept is to delay cooling just above martensitic transformation for a period of time to equalize the temperature throughout the piece. Minimizing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310123
EISBN: 978-1-62708-286-0
... must be controlled to avoid potentially serious problems. If hydrogen atmospheres are used the danger of embrittlement after quenching must be recognized. Stress relief without delay would be mandatory. The high chromium content of these alloys renders them very deep hardening. Air hardening...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130001
EISBN: 978-1-62708-284-6
... or nonuniform quenchant; improper atmosphere control, which is critical in carburizing and nitriding; delay between quench and temper; improper aging treatment or postweld heat treatment (improper, unacceptable, or mixed structures and microstructural features; temper embrittlement; sigma-phase embrittlement...