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carbides

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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...
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
... Abstract This chapter discusses the formation of free carbides and their effect on case-carburized components. It explains how alloying elements influence the composition and structure of carbide phases produced at cooling rates typical of carburizing process. It describes the morphology...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300271
EISBN: 978-1-62708-323-2
... Abstract This chapter concerns itself with the tribology of ceramics, cermets, and cemented carbides. It begins by describing the composition and friction and wear behaviors of aluminum oxide, silicon carbide, silicon nitride, and zirconia. It then compares and contrasts the microstructure...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170573
EISBN: 978-1-62708-297-6
... Abstract This article discusses the applications, compositions, and properties of cemented carbides and cermets. It explains how alloying elements, grain size, and binder content influence the properties and behaviors of cemented carbides. It also discusses the properties of steel-bonded...
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Published: 01 March 2002
Fig. 8.12 Carbides in an AISI A2 tool steel. Note the carbides are not attacked, but their boundaries are enhanced. 2% nital etch. 1000× More
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Published: 01 March 2002
Fig. 8.27 An AISI D2 tool steel showing large eutectic carbides and small carbides in a martensitic matrix. Vilella’s reagent. 500× More
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Published: 01 September 2008
Fig. 42 (a) Microstructure of the tooth top showing boundary carbides and coarse grains. (b) Detail of the brittle carbide network showing prior-austenitic grain size and tempered martensite More
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Published: 01 October 2011
Fig. 9.17 Hardness of martensite and various carbides in an M2 high-speed tool steel with representative analyses of carbide compositions. See also Chapter 12 for additional details on carbide nomenclature. Carbide type Alloying element Composition, % MC C Fe W Mo V Cr 13.0 More
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Published: 01 October 2011
Fig. 9.36 Microstructure of tempered plate martensite showing small, rounded carbides that precipitated during the tempering treatment. 4% picral + 2% nital etch. Original magnification 1000× More
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Published: 01 October 2011
Fig. 11.4 Relative hardness of alloy carbides, cementite, and martensite in high-speed steels. Source: Ref 11.8 More
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Published: 01 August 1999
Fig. 9.6 (Part 3) (i) Fine carbides (arrowed) formed within a ferrite plate in lower bainite in a 0.6% C Ni-Cr alloy steel. Transmission electron micrograph. 15,000×. After Ref 6 . More
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Published: 01 August 2018
Fig. 11.34 The effect of hot working on the distribution of carbides in a high-speed steel. (a) As-cast material, with eutectic colonies, presenting carbides. (b) Carbides have been fragmented and redistributed as an effect of hot working. (c) Carbide distribution improves with the increase More
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Published: 01 August 2018
Fig. 11.35 ASTM A681–D2, tool steel for cold working. Annealed to 250 HB. Carbides in a ferritic matrix. (a) Conventional ingot, 830 mm (33 in.) diameter subjected to forging reduction via hot working of 5.6:1 (measured as the ratio of cross sections before and after work). (b) An ingot More
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Published: 01 January 2015
Fig. 6.10 Lower bainite with fine carbides within ferrite plates in 4360 steel transformed at 300 °C (570 °F). Transmission electron micrograph, original magnification 24,000×. Source: Ref 6.12 More
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Published: 01 January 2015
Fig. 6.11 Lower bainite, showing fine carbides in the plates of the lower bainite, on a polished and nital-etched section of a medium carbon steel. Original magnification 3,000×, Field Emission SEM micrograph More
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Published: 01 January 2015
Fig. 11.11 Precipitate dispersions in quench-aged low-carbon steels. (a) Carbides decorating dislocation lines in 0.052% C steel aged for 20 min at 97 °C (207 °F). (b) Plate-shaped carbides formed on dislocations in a 0.077% C steel aged for 115 h at 97 °C (207 °F). (c) Dendritic carbides More
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Published: 01 January 2015
Fig. 17.15 Eta transition carbides (rows of very fine bright spherical particles) and cementite particles (bright linear features) in a lath martensite crystal in 4130 steel tempered at 150 °C (300 °F). Dark field transmission electron micrograph taken with a transition carbide diffracted beam More
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Published: 01 January 2015
Fig. 19.22 Interlath carbides formed during tempering of 4340 steel containing 0.003% P at 350 °C (660 °F). (a) Bright-field image. (b) Dark-field image taken with a cementite diffracted beam. Transmission electron microscope micrographs. Source: Ref 19.49 More
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Published: 01 March 2002
Fig. 8.8 Low-carbon steel etched in 2% nital. Note grain-boundary carbides (arrows) are difficult to see. 180× More
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Published: 01 March 2002
Fig. 8.23 Carbides in a low-carbon steel. 4% picral. 1500× More