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eutectoid steel

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140009
EISBN: 978-1-62708-264-8
... (hypoeutectoid) and high-carbon (hypereutectoid) steels are made, how they are classified, and how they compare. It also describes eutectoid steels which, at 0.77 wt% C, form a separate class noted for its microstructure. chemical composition eutectoid steel iron-carbon phase diagram microstructure...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220101
EISBN: 978-1-62708-259-4
... of iron-carbon phases in equilibrium and how to determine the amount of each phase that must be present to reach a desired composition. The chapter also discusses the phases associated with hypo- and hyper-eutectoid steels and presents more than a dozen micrographs, identifying important structural...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ahsssta.t53700023
EISBN: 978-1-62708-279-2
... carbide (Fe 3 C), forms. Of special interest in the Fe-C phase diagram is the eutectoid composition that occurs at 0.76% C. At this composition, the high-temperature austenite will undergo the eutectoid reaction (austenite → ferrite + cementite) at 720 °C (1330 °F). The eutectoid steel is composed of 100...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440009
EISBN: 978-1-62708-262-4
..., a new structure known as martensite is formed, although this new structure (an aggregate of iron and cementite) is in the alpha phase. It must be remembered that there are only three phases in steels, but there are many different structures. A precise definition of eutectoid carbon is unavoidable...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410197
EISBN: 978-1-62708-265-5
... treating eutectoid, hypoeutectoid, and proeutectoid steels. It also provides references to large collections of transformation diagrams and includes several diagrams that plot quenching and hardening transformations as a function of bar diameter. continuous cooling transformation diagram isothermal...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560221
EISBN: 978-1-62708-291-4
... Abstract This chapter discusses the isothermal transformation of austenite to pearlite, bainite, martensite, proeutectoid ferrite, and proeutectoid cementite. It describes the transformation mechanisms in eutectoid, hypoeutectoid, and hypereutectoid steels, the factors that influence nucleation...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310055
EISBN: 978-1-62708-326-3
... at constant temperatures, and continuous transformation diagrams follow microstructural development as a function of cooling rate. As an example, Fig. 1 compares an IT diagram with a continuous cooling transformation (CCT) diagram of steels with approximate eutectoid compositions. The main difference...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420143
EISBN: 978-1-62708-310-2
... Abstract This chapter discusses the characteristics of eutectoid transformations, a type of solid-state transformation associated with invariant reactions, focusing on the iron-carbon system of steel. It describes the compositions, characteristics, and properties of ferrite, eutectoid...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140021
EISBN: 978-1-62708-264-8
... that are effective for producing a spheroidized cementite structure. In the first process, the steel is simply heated into the fully austenite region and then quenched to martensite. For both hypo- and hyper-eutectoid compositions, the steel is then heated to a temperature just below the A 1 temperature...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220519
EISBN: 978-1-62708-259-4
... such as AISI 1050 and 1060, for instance, are used in agricultural equipment (e.g., plough wheels) and grinding tools. Eutectoid and hyper-eutectoid steels are among those that give the best results when used in rails and railroad wheels, particularly for heavy haul services. Sandor ( Ref 1 ) studied...
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 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 1999
DOI: 10.31399/asm.tb.lmcs.t66560029
EISBN: 978-1-62708-291-4
... and have structures that are determined principally by a eutectic transformation occurring at about 1150 °C; cast irons are not considered in this book. Steels often are classified according to carbon concentration. Thus, eutectoid steel contains approximately 0.8% C, and only the eutectoid...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060197
EISBN: 978-1-62708-261-7
... treatment. Steel is made by dissolving carbon in iron, and important strengthening effects can be produced in steel alloys by inducing specific phase changes to occur through heat treatment. Specifically, the iron-carbon system involves a so-called eutectoid phase transformation that allows...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310029
EISBN: 978-1-62708-326-3
... for the discontinuous yielding of low-carbon steels with largely ferritic microstructures. Fig. 14 Transmission electron micrograph showing cementite precipitated on dislocations in 0.08C-0.63Mn steel aged 115 h at 97 °C (207 °F). Courtesy of J.E. Indacochea The eutectoid region of the iron-carbon...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410133
EISBN: 978-1-62708-265-5
... and spheroidized microstructures ( Ref 8.16 ). Figure 8.6 shows the development of austenite in the pearlitic structure of a eutectoid steel. A series of specimens were heated into the austenite field, held for the times shown, and quenched. Areas of austenite formation are visible as white patches within...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410039
EISBN: 978-1-62708-265-5
..., and various types of transformations. alloying elements cementite eutectoid transformation ferrite microstructure pearlite proeutectoid structure CHAPTER 3, “PHASES AND STRUCTURES,” DESCRIBES the crystal structures of the phases that form in steels and the Fe-C phase diagram, which defines...
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
... microstructure eutectoid microstructure hypoeutectoid microstructure hypereutectoid microstructure bainitic microstructure martensitic microstructure time-temperature-transformation diagrams iron-carbon system SINCE OVER 80% by weight of all metals in use are iron and steel alloys, it is appropriate...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560361
EISBN: 978-1-62708-291-4
..., and uniformity. It provides examples of oxides that form beneath the surface of steel and explains why it occurs. It describes the conditions associated with decarburization and explains how to determine the depth of decarburized layers in eutectoid, hypoeutectoid, and hypereutectoid steels. It also discusses...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220403
EISBN: 978-1-62708-259-4
.... Figure 12.59 , for example, shows the “delamination” fracture of a filament of eutectoid steel cold worked. These filaments are frequently used to manufacture cords. The desired mode of failure is transverse to the filament cross section, not as shown in the figure. The conditions leading to this type...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430027
EISBN: 978-1-62708-253-2
... having percentages of carbon between 0.08 and 6.67% by weight. They are known as steels and cast irons. Alloys of iron and carbon having a maximum of 2.0 wt.% carbon are called steels. An alloy of iron and carbon with 0.8 wt.% carbon is called eutectoid steel; that containing less than 0.8 wt.% carbon...