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cooling curve

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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 on the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480075
EISBN: 978-1-62708-318-8
... 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...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420073
EISBN: 978-1-62708-310-2
... be constructed from time-temperature cooling curves and how they can be used to predict the phases present, their chemical compositions, and relative amounts. It also shows how phase diagrams can be modified to account for nonequilibrium cooling conditions. binary isomorphous systems...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420239
EISBN: 978-1-62708-310-2
... Abstract This chapter discusses some of the methods and measurements used to construct phase diagrams. It explains how cooling curves were widely used to determine phase boundaries, and how equilibrated alloys examined under controlled heating and cooling provide information for constructing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410197
EISBN: 978-1-62708-265-5
... range is dominated by pearlite formation in eutectoid steel and has not been included in the derived curve of Fig. 10.3 . The following list of CT characteristics with no IT counterparts has been published ( Ref 10.5 ): The depression of the M s temperature at slow cooling rates The tempering...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.aacppa.t51140133
EISBN: 978-1-62708-335-5
... Abstract This data set presents aging response curves for a wide range of aluminum casting alloys. The aging response curves are of two types: room-temperature, or "natural," curves and artificial, or "high-temperature," curves. The curves in each group are presented in the numeric sequence of...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.aacppa.t51140133
EISBN: 978-1-62708-335-5
... Abstract This data set presents aging response curves for a wide range of aluminum casting alloys. The aging response curves are of two types: room-temperature, or "natural," curves and artificial, or "high-temperature," curves. The curves in each group are presented in the numeric sequence of...
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
... Various Cooling Rates,” Olin Corp., Jan 1973. As published in Cast Aluminum Section, Structural Alloys Handbook , Vol 3, CINDAS/Purdue University, 1994, p 24, 67 Fig. D3.2 201.0-T6 aluminum casting, compressive stress-strain curves, various casting processes Effect of casting process. Heat...
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
... Various Cooling Rates,” Olin Corp., Jan 1973. As published in Cast Aluminum Section, Structural Alloys Handbook , Vol 3, CINDAS/Purdue University, 1994, p 24, 67 Fig. D3.2 201.0-T6 aluminum casting, compressive stress-strain curves, various casting processes Effect of casting process. Heat...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000109
EISBN: 978-1-62708-312-6
..., and heating and cooling profiles, affect strength, ductility, and corrosion resistance. It also provides an extensive amount of property data – including tensile and yield strength, elongation, hardness, and creep and stress rupture measurements as well as fatigue curves – for various grades of powder...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2000
DOI: 10.31399/asm.tb.fec.t65940183
EISBN: 978-1-62708-302-7
... Abstract This chapter discusses the complex polarization characteristics of active-passive metals and addresses related problems in interpreting their corrosion behavior. It begins by presenting several experimentally derived polarization curves for iron, comparing and contrasting them with the...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310055
EISBN: 978-1-62708-326-3
... molybdenum. Therefore, the heating rate to the hold temperature must be very high to obtain a true isothermal diagram. Isothermal transformation cooling curves are prevalent in the literature of the mid-20th century (e.g., Ref 2 , 3 ). These diagrams are based on painstaking development and assessment...
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
... One of the common modes for evaluating different quenchants is through the use of a quenchometer. Fixed-diameter balls have thermocouples inserted so that the cooling rate can be measured as the balls are quenched. The cooling curves produced from tests give comparisons among the speeds of different...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410335
EISBN: 978-1-62708-265-5
... Bain and Paxton ( Ref 16.1 ), based on as-quenched hardness at room temperature, is lower than the dashed curve after Jaffee and Gordon ( Ref 16.3 ), who cooled their specimens in liquid nitrogen. The data points marked by x ’s were taken from specimens cooled in liquid helium (−269 °C or −450 °F...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420171
EISBN: 978-1-62708-310-2
... Abstract This chapter explains how the presence of intermediate phases affects the melting behavior of binary alloys and the transformations that occur under different rates of cooling. It begins by examining the phase diagrams of magnesium-lead and copper-zinc, noting some of the complexities...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410113
EISBN: 978-1-62708-265-5
... are clearly tied to various microstructures and independent transformation curves. When a critical cooling rate is attained for a given product of austenite decomposition, the formation of that product is suppressed, and transformation shifts to another product requiring transformation mechanisms with...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310079
EISBN: 978-1-62708-326-3
..., and the effect of cooling from the surrounding air has become significant. An absolutely flat curve demonstrates conditions of very high hardenability, which characterize air-hardening steel, such as some highly alloyed steels. Fig. 4 Plot of end-quench test results for five different steels...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220273
EISBN: 978-1-62708-259-4
... positions inside a part to cool with different rates, as indicated in Fig. 10.40 . When the cooling curves are superimposed on the steel CCT diagrams, it is possible to determine the expected microstructures in the part after quenching, as shown in Fig. 10.41 . During materials selection, however, the...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240075
EISBN: 978-1-62708-251-8
... on the alloy composition. Consider the series of cooling curves for the copper-nickel system shown in Fig. 6.2 . For increasing amounts of nickel in the alloy, freezing begins at increasing temperatures A , A 1 , A 2 , A 3 up to pure nickel at A 4 and finishes at increasing temperatures...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240153
EISBN: 978-1-62708-251-8
... very fast cooling rate, the carbon atoms do not have time to diffuse from their interstitial positions in the bcc lattice to form cementite particles. Since martensite forms suddenly, there are no start-of-transformation or finish-of-transformation curves, as for pearlite and bainite. Instead, there...