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cementite

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410039
EISBN: 978-1-62708-265-5
... The microstructure of carbon steel is largely determined by the transformation of austenite to ferrite, cementite, and pearlite. This chapter focuses on the microstructures produced by diffusion-controlled transformations that occur at relatively low cooling rates. It describes the conditions...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140213
EISBN: 978-1-62708-264-8
.... It also includes labels identifying the microconstituents that form in plain carbon steels under rapid quenching conditions. cementite iron-carbon phase diagram microstructure ...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560165
EISBN: 978-1-62708-291-4
...Abstract Abstract A spheroidized structure, which consists of spherically shaped cementite in a matrix of ferrite, is often desired in the production of steel, whether to improve properties, such as machinability and ductility, or accommodate subsequent hardening treatments. This chapter...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220101
EISBN: 978-1-62708-259-4
...Abstract Abstract This chapter describes the phases and constituents present in iron-carbon steels in near-equilibrium conditions. It explains how to use phase diagrams to predict and manage the development of ferrite, austenite, cementite, and pearlite through controlled cooling. It discusses...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410017
EISBN: 978-1-62708-265-5
... This chapter describes the iron-carbon phase diagram, its modification by alloying elements, and the effect of carbon on the chemistry and crystallography of austenite, ferrite, and cementite found in Fe-C alloys and steels. It also lays the groundwork for understanding important metallurgical...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240453
EISBN: 978-1-62708-251-8
..., V, Cr, Sn, Mo, and Mn) promote the formation of cementite. This chapter examines the relative potencies of these alloys and their effect on microstructure. It covers the five most common commercial cast irons, including white, gray, ductile, malleable, and compacted graphite, describing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560125
EISBN: 978-1-62708-291-4
... it intermingles with proeutectoid ferrite and cementite. It explains how ferrite and pearlite respond to deformation and how related features such as slip lines, dislocations, shear bands, and kinking can be detected as well as what they reveal. It also describes the structure of patented wires, cast steels...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560221
EISBN: 978-1-62708-291-4
... nucleation of regularly spaced cementite crystals. Subsequent growth could occur by either sideways extension or repeated branching of these crystals, as sketched in (gB). (g) Nucleation and growth of a pearlite colony from a single cementite nucleus. A, cementite crystal extends along the nucleating...
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 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560029
EISBN: 978-1-62708-291-4
...Abstract Abstract This chapter describes some of the most essential tools in metallurgy and what they reveal about the structure, composition, and processing requirements of steel. It begins by identifying important details in the constitutional diagram of iron-cementite. It then explains how...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560039
EISBN: 978-1-62708-291-4
... temperatures affect ferritic grain size and the distribution of cementite particles. It also discusses subsequent processing, including cold rolling and annealing, and the parameters with the greatest impact on grain size and microstructure. In addition, it describes the production of enameling irons...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560185
EISBN: 978-1-62708-291-4
...Abstract Abstract This chapter examines the structural changes that occur in high-carbon steels during austenitization. It describes the effect of heating time and temperature on the production of austenite and the associated transformation of ferrite and cementite in eutectoid, hypoeutectoid...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220403
EISBN: 978-1-62708-259-4
... = 0.55%) during the recrystallization process. Mostly equiaxial ferrite and aligned cementite. Heat-treated at 600 °C (1110 °F), hardness: 60 HRB. Etchant: nital 2%. Fig. 12.24 Same steel as Fig. 12.11 (C = 0.06%, Mn = 0.55%) after completing the recrystallization. Equiaxial ferrite...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310029
EISBN: 978-1-62708-326-3
...Atomic volumes of selected microstructural constituents of ferrous alloys Table 1 Atomic volumes of selected microstructural constituents of ferrous alloys Phase Apparent atomic volume, Å 3 Ferrite 11.789 Cementite 12.769 Ferrite + carbides 11.786 + 0.163 C...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140021
EISBN: 978-1-62708-264-8
... and the type of grain, for example, ferrite versus austenite. The gray level observed in the microscope for a given grain depends on the degree of smoothness of the grain surface after the etching. As shown in Fig. 4.1 , grains that are single phase, such as ferrite, austenite, and cementite, will have...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140009
EISBN: 978-1-62708-264-8
... in austenite at 820 °C (1508 °F) is 1 wt% C. If an alloy containing 1.5 wt% C is heated to 820 °C (1508 °F), only 1% of this 1.5% C will be dissolved in the austenite. What happens to the remaining 0.5% C? This excess carbon becomes incorporated into a new phase called cementite. The new phase, cementite, has...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.mgppis.t60400023
EISBN: 978-1-62708-258-7
.... 2.3 Portion of the iron-carbon diagram Fig. 2.4 Face-centered cubic crystal structure (unit cell) Fig. 2.5 Body-centered cubic crystal structure (unit cell) Fig. 2.7 A hypereutectoid Fe-1.4% C binary alloy showing proeutectoid cementite (and cementite needles...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420143
EISBN: 978-1-62708-310-2
... involves the decomposition of solid solution into two other solid phases. The iron-carbide phase diagram is shown in Fig. 8.2 . The composition only extends to 6.70% C; at this composition the intermediate compound iron carbide, or cementite (Fe 3 C), is formed, represented by the vertical line...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140107
EISBN: 978-1-62708-264-8
... will generally consist of ferrite and cementite. In hypoeutectoid steels, the cementite is usually present as pearlite, and in hypereutectoid steels, it will be present either as pearlite or a mixture of pearlite and cementite particles. In plain carbon steels, ferrite is essentially pure iron (Fe+0.02% or less...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410373
EISBN: 978-1-62708-265-5
... Ohmori Y. , Hägg Carbide Formation and Its Transformation into Cementite During the Tempering of Martensite , Trans. Jpn. Inst. Met. , Vol 13 , 1972 , p 119 – 127 10.2320/matertrans1960.13.119 17.37 Ma C.-B. , Ando T. , Williamson D.L. , and Krauss G. , Chi-Carbide...