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Ferrite

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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 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410277
EISBN: 978-1-62708-265-5
... This chapter describes heat treatments that produce uniform grain structures, reduce residual stresses, and improve ductility and machinability. It also discusses spheroidizing treatments that improve strength and toughness by promoting dispersions of spherical carbides in a ferrite matrix...
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Published: 01 March 2002
Fig. 8.18 A dual-phase steel showing epitaxial ferrite (new ferrite) at prior austenite grain boundaries. The epitaxial ferrite formed when the steel was heated into the two-phase region. Austenite formed at the grain boundaries, and ferrite transformed epitaxially on the old ferrite upon More
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Published: 01 March 2002
Fig. 8.36 Epitaxial ferrite in a dual-phase steel. The epitaxial ferrite is surrounding regions of martensite (dark-appearing constituent) (see arrows). Matrix is ferrite. Sodium metabisulfite tint etch. 1000× More
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Published: 01 August 1999
Fig. 5.16 (Part 3) Ferrite-pearlite banding. (i) Pancake arrangement of ferrite and pearlite bands in banded plate. (j) Variation of manganese and silicon contents across representative ferrite-pearlite bands in the specimen shown in Fig. 5.16 (Part 2) (e) . Determined by EPMA. More
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Published: 01 January 2015
Fig. 7.14 Schematic diagram of intragranular acicular ferrite (IAF) and other ferrite morphologies in weld metal. Source: Ref 7.28 More
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Published: 01 August 2018
Fig. 9.67 Widmanstätten ferrite in a medium carbon steel. The ferrite plates in this case are disposed at an angle of 60° in the prior austenitic grain. Etchant: aqua regia. More
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Published: 01 August 2018
Fig. 17.34 Gray cast iron with ferrite dendrites. Ferrite is formed due to graphitization during cooling in the solid state. Distribution D graphite. Etchant: picral. More
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Published: 01 March 2002
Fig. 2.14 A form of ferrite called Widmanstätten ferrite in a coarse-grained AISI/SAE 1025 steel. 4% picral etch. 100× More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410113
EISBN: 978-1-62708-265-5
... This chapter describes the ferritic microstructures that form in carbon steels under continuous cooling conditions. It begins with a review of the Dubé classification system for crystal morphologies. It then explains how cooling-rate-induced changes involving carbon atom diffusion...
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Published: 01 June 1985
Fig. 5-5. Microstructural banding shows alternating layers of ferrite and pearlite. Nonmetallic inclusions tend to follow the ferrite bands. More
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Published: 01 November 2019
Figure 24 X-ray CT analysis shows a crack in the ferrite core. More
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Published: 01 December 2018
Fig. 3.10 Microstructures of steel, (a) ferrite; 100x; (b) austenite; 200x; and (c) pearlite; 1000x More
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Published: 01 December 2018
Fig. 3.28 Microstructure of medium-carbon steel with globules of cementite in ferrite matrix More
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Published: 01 December 2018
Fig. 6.6 OD microstructures at (a) far-side location of banded ferrite and pearlite, 200×; and (b) near-side failure location of ferrite grains and degraded pearlite in the form of spheroidization with coagulated carbides, 400× More
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Published: 01 December 2018
Fig. 6.7 Microstructures at (a) fracture lip having elongated ferrite grains with coagulated carbides and scattered creep cracks at ferrite grain boundaries, 100×; and (b) OD surface near fracture lip showing ferrite and coagulated carbides having fissures filled with scales, 400× More
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Published: 01 December 2018
Fig. 6.10 Microstructures at (a) unaffected location showing grains of ferrite with partially degraded bainite and globular carbides, 200×; and (b) at rupture location having nonuniform grains of ferrite along with globular carbides both within the grains and at grain boundaries, 400×. Bainite More
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Published: 01 December 2018
Fig. 6.34 (a) Microstructure of fracture edge with grains of ferrite and creep crack along with oriented creep cavities, 400×; (b) normal ferrite-pearlite structure away from failure location, 400× More
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Published: 01 December 2018
Fig. 6.37 Core microstructure of a tube showing ferrite and tempered martensite, (a) 400×, (b) 1000× More
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Published: 01 December 2018
Fig. 6.84 (a) Outer-edge microstructure of ferrite-pearlite with erosion marks on outer surface covered with scale, 400×. (b) Scale patches on outer surface, 100× More