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proeutectoid ferrite

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Published: 01 January 2015
Fig. 4.1 Portion of the Fe-C diagram emphasizing regions of proeutectoid ferrite and cementite formation and the eutectoid transformation of austenite. Source: Ref 4.1 More
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Published: 01 January 2015
Fig. 4.16 Proeutectoid ferrite (white network) and pearlite in an Fe-0.4C alloy air cooled from the austenite field. Nital etch. Original magnification at 500×. Courtesy of A.R. Marder and A. Benscoter, Bethlehem Steel Corp., Bethlehem, PA More
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Published: 01 March 2002
Fig. 2.15 Proeutectoid ferrite (white etching network) at the prior austenite grain boundaries in an oil-quenched AISI/SAE 1060 steel. Dark etching constituent is pearlite. 4% picral etch. 500× More
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Published: 01 August 1999
Fig. 9.9 (Part 1) Proeutectoid ferrite and pearlite formation in isothermal transformation of 0.55% C hypoeutectoid steels. 0.55C-0.08Si-0.60Mn (wt%). (a) Austenitized at 860 °C, transformed at 705 °C for 20 s. Picral. 500×. (b) Austenitized at 860 °C, transformed at 705 °C for 2 min More
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Published: 01 August 1999
Fig. 9.9 (Part 2) Proeutectoid ferrite and pearlite formation in isothermal transformation of 0.55% C hypoeutectoid steels. 0.55C-0.08Si-0.60Mn (wt%). (g) Austenitized at 860 °C, transformed at 550 °C for 15 s. 320 HV. Picral. 500×. (h) Austenitized at 860 °C, transformed at 500 °C for 5 s More
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Published: 01 August 1999
Fig. 9.11 (Part 1) Proeutectoid ferrite and pearlite formation in isothermal transformation of hypoeutectoid steels. Micrographs of a 0.8% C steel transformed at these two temperatures are given in Fig. 9.1 . (a) and (b) 0.15% C (0.17C-0.06Si-0.41 Mn, wt%). (a) Austenitized at 925 °C More
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Published: 01 August 1999
Fig. 9.11 (Part 2) Proeutectoid ferrite and pearlite formation in isothermal transformation of hypoeutectoid steels. Micrographs of a 0.8% C steel transformed at these two temperatures are given in Fig. 9.1 . (a) and (b) 0.15% C (0.17C-0.06Si-0.41 Mn, wt%). (a) Austenitized at 925 °C More
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Published: 31 December 2020
Fig. 20 Formation of (a) proeutectoid ferrite in hypoeutectoid steel and (b) proeutectoid cementite in hypereutectoid steel More
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Published: 31 December 2020
Fig. 4 Pearlite and proeutectoid ferrite (light areas) in commercially processed bar of a hypoeutectoid steel that was water quenched from 1050 to 805 °C (1920 to 1480 °F) and then air cooled. (a) Cooled from 805 °C (1480 °F) to room temperature in still air, which resulted in most More
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: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560125
EISBN: 978-1-62708-291-4
... 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, and sintered steels...
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Published: 01 December 1996
Fig. 2-6(a) Depiction of the formation of proeutectoid or primary ferrite from austenite upon cooling slowly a hypoeutectoid steel. (Adapted from W.D. Callister, Materials Science and Engineering , Wiley, New York (1985). Reprinted by permission of John Wiley & Sons, Inc., Ref 5 ) More
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 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410197
EISBN: 978-1-62708-265-5
... the beginning of proeutectoid ferrite formation. As indicated in Fig. 10.1 , the latter curve approaches the Ae 3 temperature for the 0.5% C steel with increasing transformation time. Hypoeutectoid steels with lower carbon contents would have higher Ac 3 temperatures and therefore expanded regions...
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Published: 01 March 2002
Fig. 7.41 Micrographs of a AISI/SAE 1080 steel shown with (a) disturbed metal on the surface using light polishing pressure and (b) the normal microstructure of pearlite with proeutectoid ferrite using heavy polishing pressure. 4% picral etch. 500× More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420143
EISBN: 978-1-62708-310-2
... a proeutectoid cementite plate. Source: Ref 8.8 as published in Ref 8.1 Fig. 8.12 Growth of intergranular pearlite nodules (numbered light regions) into the austenite matrix (dark). Source: Ref 8.9 as published in Ref 8.1 Fig. 8.13 High-resolution electron micrograph of two ferrite...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410113
EISBN: 978-1-62708-265-5
... DESCRIBES ferritic microstructures that form during continuous cooling of carbon steels. Ferritic microstructures identified as proeutectoid ferrite have already been discussed in Chapter 4, “Pearlite, Ferrite, and Cementite,” in this book. These forms of ferrite nucleate as equiaxed grains on austenite...
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Published: 01 August 1999
Fig. 8.5 (Part 1) Austenitization of hypoeutectoid steels. Original structures: pearlite and proeutectoid ferrite. (a) to (d) 0.4% C, annealed. 0.39C-0.22Si-0.75Mn (wt%). (a) As-annealed. 215 HV. Picral. 500×. (b) Heated for 15 min at 740 °C, water quenched. Tempered at 200 °C. 440 HV More
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Published: 01 August 1999
Fig. 8.5 (Part 2) Austenitization of hypoeutectoid steels. Original structures: pearlite and proeutectoid ferrite. (a) to (d) 0.4% C, annealed. 0.39C-0.22Si-0.75Mn (wt%). (a) As-annealed. 215 HV. Picral. 500×. (b) Heated for 15 min at 740 °C, water quenched. Tempered at 200 °C. 440 HV More
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310029
EISBN: 978-1-62708-326-3
..., typically have some cementite (Fe 3 C). Depending on carbon content and cooling rate, several different microstructures of ferrite and cementite can occur (see also the “ Proeutectoid Ferrite and Cementite ” section in this chapter). In low-carbon steels, the morphology of ferrite can vary from equiaxed...