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Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170091
EISBN: 978-1-62708-297-6
... Abstract This article discusses the composition and morphology of compacted graphite (CG) iron relative to that of gray and ductile iron. It explains that the graphite in CG iron is intermediate in shape between the spheroidal graphite found in ductile iron and the flake graphite in gray iron...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2022
DOI: 10.31399/asm.tb.isceg.t59320207
EISBN: 978-1-62708-332-4
... Abstract Compacted graphite iron (GCI) is a cast iron grade that is engineered through graphite morphology modifications to achieve a combination of thermal and mechanical properties that are in between those of flake graphite iron and ductile iron. This chapter discusses the advantages...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560165
EISBN: 978-1-62708-291-4
... contributes to the production of spheroidal transformation products and why secondary graphitization sometimes occurs. cementite graphitization pearlite plastic deformation spheroidization A spheroidized structure , which consists of approximately spherical particles of cementite in a matrix...
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Published: 01 March 2002
Fig. 1.29 Typical graphite shapes after ASTM A 247. I, spheroidal graphite; II, imperfect spheroidal graphite; III, temper graphite; IV, compacted graphite: V, crab graphite; VI, exploded graphite; VII, flake graphite More
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Published: 01 October 2011
Fig. 10.12 Proeutectic graphite. (a) Kish graphite in as-cast gray iron (Fe-4.3C-1.5Si-0.5Mn-0.12P-0.08S). (b) Formation of lumpy or starlike proeutectic graphite with rapid cooling of a hypereutectic alloy. As-polished. Original magnification: 100× More
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Published: 01 September 2005
Fig. 67 A batch-graphite integral oil quench vacuum furnace with vacuum carburizing capability More
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Published: 01 September 2005
Fig. 32 Flake graphite in a pearlitic matrix in a class 30 as-cast gray iron More
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Published: 01 September 2005
Fig. 33 Spheroidal graphite in an unetched ductile iron matrix shown at 75× (a) and in the etched (picral) condition shown at 300× (b). Etching reveals that the matrix consists of ferritic envelopes around the graphite nodules (bull’s-eye structure) surrounded by a pearlitic matrix. More
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Published: 01 September 2005
Fig. 35 Austempered ductile iron structure consisting of spheroidal graphite in a matrix of bainitic ferritic plates (dark) and interplate austenitic (white) More
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Published: 01 August 2018
Fig. 7.20 Metastable Fe-C phase equilibrium diagram (graphite is not present). The ferrite field at lower temperatures was exaggerated (out of scale) to be visualized. More
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Published: 01 March 2002
Fig. 1.25 Types of graphite flakes in gray iron (American Foundryman’s Society-ASTM). In the recommended practice (ASTM A 247), these charts are shown at a magnification of 100×. They have been reduced to one-third size for reproduction here. More
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Published: 01 March 2002
Fig. 2.47 The iron-graphite phase diagram More
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Published: 01 March 2002
Fig. 2.52 A graphite nodule in a ductile (nodular) cast iron. Unetched. 500× More
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Published: 01 March 2002
Fig. 3.26 Microstructure of a ductile iron showing graphite nodules (gray) with rims of ferrite (white) in a matrix of pearlite. 4% picral etch. 100× More
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Published: 01 March 2002
Fig. 3.27 Microstructure of a graphite nodule in ductile iron showing the internal structure of the nodule radiating from the central nucleus. Polarized light. Unetched. 500× More
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Published: 01 March 2002
Fig. 3.49 Microstructure of a 1.2% C steel that has formed graphite (dark etching constituent), or “graphitized,” after exposure to 700 °C (1290 °F) for (a) 190, (b) 375, and (c) 565 h. 4% picral etch. 500×. Courtesy of B. Lindsay and A.R. Marder, Lehigh University More
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Published: 01 June 2008
Fig. 24.9 Flake graphite in gray iron specimen deep etched to reveal flakes. Original magnification: 500×. Source: Ref 9 More
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Published: 01 June 2008
Fig. 24.10 ASTM/AFS graphite flake types. Source: Ref 8 More
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Published: 01 June 2008
Fig. 24.11 Effect of graphite flake length on tensile strength of gray iron. Source: Ref 2 More
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Published: 01 June 2008
Fig. 24.12 ASTM/AFS graphite flake size. Source: Ref 10 More