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eutectoid microstructure

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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
...Abstract Abstract This chapter examines the isothermal phase transformations of the iron-carbide system. The discussion includes the formation of ferritic, eutectoid, hypoeutectoid, hypereutectoid, bainitic, and martensitic microstructures as well as their properties, composition...
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...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220101
EISBN: 978-1-62708-259-4
... features along with cooling conditions and sample preparation procedures. austenite cementite ferrite hyper-eutectoid steel hypo-eutectoid steel microstructure pearlite This chapter introduces the basic concepts of the phases and constituents present in the simpler steels in conditions...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560221
EISBN: 978-1-62708-291-4
... Fig. 9.1 (Part 1) Pearlite formation (at 705 and 650 °C) in isothermal transformation of 0.8% C eutectoid steels. 0.81C-0.07Si-0.65Mn (wt%). Figure 9.2 completes this series. (a) Austenitized at 860 °C, transformed at 705 °C for 150 s. Picral. 250×. (b) Austenitized at 860 °C...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140009
EISBN: 978-1-62708-264-8
...-carbon (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...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770051
EISBN: 978-1-62708-337-9
... , the rejection of carbon to form carbide at the grain boundaries ceases, and the remaining austenite, now of carbon content C3, transforms to the eutectoid microstructure pearlite. The final structure, therefore, consists of pearlite grains in a network of iron carbide. The proportions of precipitated carbide...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420143
EISBN: 978-1-62708-310-2
... on yield strength. Source: Ref 8.4 as published in Ref 8.3 Fig. 8.5 Hall-Petch relationship for low-carbon ferritic steel. Source: Ref 8.3 Fig. 8.6 Microstructure of ultralow-carbon ferritic steel. Source: Ref 8.4 as published in Ref 8.3 The eutectoid reaction...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560029
EISBN: 978-1-62708-291-4
... eutectoid transformation at 727 °C that gives rise to the range of microstructures and associated properties that underlie the versatility of alloys, termed steels , containing up to approximately 2% C. Alloys containing very low concentrations of carbon often are termed irons and have structures...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220519
EISBN: 978-1-62708-259-4
... makes less evident the microstructural differences of the quenched structures. Etchant: nital. Courtesy of L.T. Sandor. Source: Ref 1 Fig. 15.19 AISI 1050 steel plate, normalized. (a) Surface; (b) mid-thickness. Pro-eutectoid ferrite and pearlite. Etchant: nital 2%. Courtesy of ArcelorMittal...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480141
EISBN: 978-1-62708-318-8
...Abstract Abstract The practical application of metals and alloys is guided largely by information obtained through the study of their microstructure. This chapter examines a wide range of titanium microstructures, identifying characteristic features and explaining what they reveal about...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1996
DOI: 10.31399/asm.tb.phtpclas.t64560003
EISBN: 978-1-62708-353-9
..., Ref 8 ) Fig. 2-14 Microstructures illustrating the isothermal formation of pearlite in a eutectoid steel. At the transformation temperature, the structures were mixtures of pearlite and austenite, but the austenite transformed to martensite upon cooling rapidly to 25°C. (Taken from E.C. Bain...
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...
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
.... Source: Ref 2.1 Fig. 2.17 Effect of carbon content on the mechanical properties of plain carbon steels. Source: Ref 2.1 Fig. 2.16 Major heat treating procedures superimposed on TTT diagram. Source: Ref 2.3 Fig. 2.9 Microstructures of eutectoid steel resulting from fast...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770001
EISBN: 978-1-62708-337-9
... content that produces only a pearlitic matrix microstructure as a result of an extremely slow cool through the Ac 3 or Ac cm to Ac 1 temperature range. A steel with less than the eutectoid carbon content (hypoeutectoid) contains pearlite with some ferrite, whereas a steel with more carbon than...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430027
EISBN: 978-1-62708-253-2
... until the eutectoid composition is reached. At the eutectoid temperature, the remaining austenite of the eutectoid composition transforms isothermally to pearlite as per the eutectoid reaction discussed above. Figure 3.11 shows the microstructures of hypoeutectoid and hypereutectoid steel. Fig...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440009
EISBN: 978-1-62708-262-4
...% C. 1000×. (b) Microstructure (all pearlite grains) of a eutectoid steel containing 0.77% C. 2000×. (c) Microstructure of a eutectoid steel containing 0.77% C with all cementite in the spheroidal form. 1000×. (d) Microstructure of a hypereutectoid steel containing ~1.0% C containing pearlite...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560005
EISBN: 978-1-62708-291-4
... certainly derived from the Latin ferrum meaning iron. More recently, many adjectival modifications have been used to convey information about the microstructural properties of the phase. Proeutectoid ferrite, proeutectoidal ferrite, eutectoid ferrite, probainitic ferrite, upper bainitic ferrite...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220193
EISBN: 978-1-62708-259-4
... temperature range, between the temperatures at which the eutectoid transformation will happen, forming pearlite (around 550–720 °C, or 1020–1330 °F) ( Ref 17 ), and the temperature at which martensite transformation starts, a series of specific microstructures can form in carbon steel that is either...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140175
EISBN: 978-1-62708-264-8
...Abstract Abstract This chapter discusses the composition, properties, microstructure, grain formation, and fracture behavior of gray, white, ductile, and malleable cast iron and how these critical factors are affected when iron is heated to different temperatures prior to or during...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ems.t53730069
EISBN: 978-1-62708-283-9
... °C (1340 °F), the eutectoid reaction, γ → α + Fe 3 C, occurs with both the ferrite (α) and the cementite (Fe 3 C) precipitating simultaneously in the form of alternating platelets ( Fig. 7.2 ). This microstructure is called pearlite. Fig. 7.2 Microstructure of pearlite. Note the alternating...