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continuous cooling transformation diagrams

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410197
EISBN: 978-1-62708-265-5
... Isothermal and continuous cooling transformation (CT) diagrams help users map out diffusion-controlled phase transformations of austenite to various mixtures of ferrite and cementite. This chapter discusses the application as well as limitations of these engineering tools in the context of heat...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130601
EISBN: 978-1-62708-284-6
... Abstract This appendix is a collection of selected continuous cooling transformation diagrams for carbon steels; Mn steels; Mn-Mo, Mn-Ce, Mn-Ni-Mo, and Mn-Ni-CrMo steels; silicon steels; nickel steels; Ni-Cr-Mo steels; and chromium steels. Reference 1. From Atlas of Continuous Cooling...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310055
EISBN: 978-1-62708-326-3
... transformation and continuous cooling transformation diagrams that characterize the conditions that produce the various microstructures. It discusses the mechanism and process variables of quenching of steel, explaining the factors involved in the mechanism of quenching. In addition, the chapter provides...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560221
EISBN: 978-1-62708-291-4
... - 1976 . 32. Atkins M. , Atlas of Continuous Cooling Transformation Diagrams for Engineering Steels , British Steel Corp ., Sheffield , 1977 ; revised U.S. edition published by American Society for Metals , Metals Park, OH , 1980 . 33. Transformation Diagrams of Steels Made...
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
... Abstract This chapter discusses the processes used in manufacturing to thermally alter the properties of metals and alloys. It begins with a review of the iron-carbon system, the factors that affect hardenability, and the use of continuous cooling transformation diagrams. It then explains how...
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 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560029
EISBN: 978-1-62708-291-4
... isothermal transformation and continuous-cooling diagrams and how to recognize the effect of various alloying elements. alloying elements constitutional diagram continuous-cooling diagram isothermal transformation diagram phase transformations It has been established that a microscopical...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480031
EISBN: 978-1-62708-318-8
... and describes the helpful information they contain. binary phase diagrams phases solidification ternary phase diagrams THIS CHAPTER DISCUSSES the structures, phases, and phase transformations observed in metals and alloys as they solidify and cool to lower temperatures ( Ref 2.1 – 2.3 ). It also...
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
.... Phase diagrams are graphical representations that show the phases present in the material at various compositions, temperatures, and pressures. It should be recognized that phase diagrams represent equilibrium conditions for an alloy, which means that very slow heating and cooling rates are used...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420263
EISBN: 978-1-62708-310-2
... transformation temperatures, phase amounts, and phase compositions in an equilibrium state is critical in the determination of processing parameters. In this section, four examples are presented to show how multicomponent phase diagram calculation can be readily useful for industrial applications...
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 March 2012
DOI: 10.31399/asm.tb.pdub.t53420001
EISBN: 978-1-62708-310-2
... International , 1994 • Tanner L. and Okamoto H. , Ed., Phase Diagrams of Binary Beryllium Alloys , ASM International , 1987 • Tonkov E.Yu. and Ponyatovsky E.G. , Phase Transformations of Elements under High Pressure , CRC Press , 2004 • Villars P. , Prince...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410113
EISBN: 978-1-62708-265-5
... considerable recent attention. Identification, characterization, and classification of the various ferritic structures are based primarily on continuous-cooling-transformation (CCT) diagrams, examples of which are shown in Fig. 7.5 and 7.6 . Figure 7.5 shows the CCT diagram for an ultralow-carbon steel...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420015
EISBN: 978-1-62708-310-2
... that are covered in Chapters 5 , 6 , and 7 in this book, respectively. Solid-state phase transformations occur when one or more parent phases, usually on cooling, produces a new phase or phases. The most important mechanisms are nucleation, growth, and diffusion. However, not all transformations rely...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420191
EISBN: 978-1-62708-310-2
... lines may be presumed to lie approximately in the section. For this reason, vertical sections continue to be of some use, though they have been largely displaced by isothermal sections in the literature of alloy constitution. Certain vertical sections in complex diagrams (the quasi-binary sections) do...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140083
EISBN: 978-1-62708-264-8
... of these constituents: isothermal transformation (IT) and continuous transformation (CT). Each technique has associated diagrams that are called IT diagrams and CT diagrams. (Note: Some people continue to prefer the use of the older names, time-temperature transformation (TTT) in place of IT and continuous cooling...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420143
EISBN: 978-1-62708-310-2
... hypoeutectoid structures invariant transformation peritectoid transformation EUTECTOID AND PERITECTOID transformation are classified as solid-state invariant transformations. Invariant transformations are isothermal reversible reactions that occur at an invariant point on the phase diagram of an alloy...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240053
EISBN: 978-1-62708-251-8
... parent phases, usually on cooling, produces a new phase or phases. The most important mechanisms are nucleation, growth, and diffusion. However, not all transformations rely on diffusion. For example, the important martensitic transformation in steels occurs quite suddenly by a combination of shear...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.mgppis.t60400023
EISBN: 978-1-62708-258-7
... understanding of kinetics of ferrous phase transformations by transformations at constant temperature, practical heat treatments are carried out by heating and cooling at various rates. The same concepts developed by Bain can be used to develop continuous cooling transformation (CT) diagrams. These diagrams...
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...