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Quenching

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Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310055
EISBN: 978-1-62708-326-3
... Abstract The decomposition of austenite, during controlled cooling or quenching, produces a wide variety of microstructures in response to such factors as steel composition, temperature of transformation, and cooling rate. This chapter provides a detailed discussion on the isothermal...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050139
EISBN: 978-1-62708-311-9
... Abstract This chapter discusses the quenching process and its adaptation to induction heat treating. It describes the three stages of quenching, the cooling characteristics of various types of quenchants, and the details of nearly a dozen compatible quenching methods. It also explains how...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130255
EISBN: 978-1-62708-284-6
... Abstract This chapter provides an overview of the fundamental material- and process-related parameters of quenching on residual stress, distortion control, and cracking. It begins with a description of phase transformations during heating and quenching of steel. This is followed by a section...
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
... Abstract Quenching is a critical step in the production of hardened steel. This chapter untangles some of the complexities of the quenching process and its effect on the microstructure and properties of various steels. Making extensive use of cooling curves, it sheds light...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1996
DOI: 10.31399/asm.tb.phtpclas.t64560087
EISBN: 978-1-62708-353-9
...Typical range of H values for different quenchants Table 4-2 Typical range of H values for different quenchants (a) Circulation or agitation H-value or quenching power Oil Water Caustic soda or brine None 0.25 to 0.30 0.9 to 1.0 2 Mild 0.30 to 0.35 1.0 to 1.1 2 to 2.2...
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Published: 01 September 2008
Fig. 12 Comparison of direct quenching and reheat and quenching of 10 cm (4 in.) diameter AISI 8620 steel after oil quenching More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050335
EISBN: 978-1-62708-311-9
... Abstract This appendix discusses the sizing, scaling, and configuration requirements of the basic components in a quench cooling system, including tanks, pumps, hoses, and inlet and outlet fixtures and the materials from which they are made. quench cooling systems quench rings...
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Published: 01 November 2007
Fig. 12.4 Hardness of several plain carbon steels after isothermal quenching. All steels are 0.80 to 0.90% Mn except 1095 and 10113, which are 0.30% Mn. Source: Ref 12.9 More
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Published: 01 November 2007
Fig. 13.13 Stabilization of austenite through a two-step quenching process More
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Published: 01 November 2007
Fig. 17.3 Microconstituents present before and after quenching, illustrating the correlation between the temperature profile and the microconstituents. FM, fresh martensite More
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Published: 01 March 2006
Fig. 18 Standard end-quench (Jominy) test specimen and method of quenching in quenching jig. Source: Ref 9 More
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Published: 01 March 2006
Fig. 4 Batch-type multiple-purpose furnace that features an integral quenching system. Source: Ref 4 More
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Published: 01 March 2006
Fig. 17 Temperature-controlled overflow tank for water quenching. Source: Ref 3 More
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Published: 01 March 2006
Fig. 18 Schematic of a typical installation for high-volume batch quenching of carburized or hardened parts on trays. Directional vanes in the oil stream distribute the oil flow uniformly. Unit contains combined heating and cooling elements and provision for blanketing the surface of the oil More
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Published: 01 March 2006
Fig. 1 Microstructure of W1 tool steel after brine quenching from 790 °C (1450 °F) and tempering at 175 °C (350 °F). Dark matrix is tempered martensite. A few undissolved particles of carbide are visible (white constituent). Hardness is 64 HRC. Source: Ref 1 More
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Published: 01 March 2006
Fig. 3 Hardness vs. tempering temperature for W1 tool steel after brine quenching from 790 °C (1450 °F). Source: Ref 1 More
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Published: 01 August 2018
Fig. 10.35 Hardness reached by steels after quenching as a function of their carbon content and the percentage of martensite in the microstructure. Martensite hardness depends only on carbon content. Source: Ref 16 More
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Published: 01 August 2018
Fig. 10.59 Quenching crack susceptibility as a function of the “equivalent carbon” used as a measure for hardenability. Source: Ref 13 More
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Published: 01 August 2018
Fig. 10.60 Crack caused by quenching stresses in an AISI 4340 cylindrical bar. Reprinted with permission from ASM. Source: Ref 35 More
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Published: 01 August 2018
Fig. 10.79 During quenching (a), surface and core of the part will reach the M s temperature at different times, increasing the stresses in quenching. During martempering (b), a short isothermal intermediate hold makes it possible to homogenize the temperature of the part before it reaches M More