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nodular graphite

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Published: 01 August 2018
Fig. 17.78 (a) and (b) Aspect of nodular graphite in ductile cast iron subjected to deep etching. Some of the nodules have been sectioned in the original metallography, before deep etching. SE, SEM. (c) Tridimensional reconstruction of nodular graphite in ductile cast iron. Cuts were made More
Image
Published: 01 March 2002
Fig. 2.52 A graphite nodule in a ductile (nodular) cast iron. Unetched. 500× More
Image
Published: 01 December 1984
Figure 2-26 Examples of graphite retention in cast-iron samples polished automatically as described in the text. Top left, flake graphite; top right, compacted graphite; bottom, nodular graphite; 65 ×. More
Image
Published: 01 March 2002
Fig. 4.22 (Part 1) ASTM A 247 Plate III method for evaluating the microstructure of nodular graphite in iron castings. Graphite size: magnification 100 diameters. Courtesy of ASTM More
Image
Published: 01 March 2002
Fig. 4.22 (Part 2) ASTM A 247 Plate III method for evaluating the microstructure of nodular graphite in iron castings. Graphite size: magnification 100 diameters. Courtesy of ASTM More
Image
Published: 01 October 2011
for graphitization is for conversion of one-half of the carbon in aluminum-deoxidized, 0.5% Mo cast steel to nodular graphite. More
Image
Published: 01 December 1984
Figure 6-25 Frequency histogram of shape factors measured on flake, compacted, and nodular graphite samples. More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220583
EISBN: 978-1-62708-259-4
... heat treatment leads graphite formation in a reasonably tough microstructure. The cost of the process, however, creates a significant limitation. The development of nodular cast iron (see the section “ 17.5 Nodular Cast Iron or Ductile Cast Iron ” in this chapter), either in 1940 per Ref 1 or 1948...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2022
DOI: 10.31399/asm.tb.isceg.t59320207
EISBN: 978-1-62708-332-4
... the microstructure with 10% nodularity. Figure 11.1(b) is a scanning electron micrograph showing the complex connected graphite network in three dimensions. The micrograph shows that the individual worm-like graphite shapes are all interconnected within a cell. The complex graphite morphology that resembles coral...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170091
EISBN: 978-1-62708-297-6
... Compacted graphite (CG) irons are the newest member of the cast iron family. Compacted graphite irons have inadvertently been produced in the past as a result of insufficient magnesium or cerium levels in melts intended to produce ductile (spheroidal or nodular graphite) iron; however, it has only been...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060247
EISBN: 978-1-62708-261-7
... of cast iron include gray iron, white or chilled iron, ductile (or nodular) iron, malleable iron, and compacted graphite iron. These irons have very different compositions, casting characteristics, and heat treating requirements, which result in a wide variety of physical, chemical, and mechanical...
Image
Published: 01 August 2018
graphite. (c) Graphite formation inside areas of cementite, still present in the microstructure. (d) Graphite formed is not compact in shape. (e) Blackheart malleable cast iron. (Compare to ductile cast iron structures, in the section “ 17.5 Nodular Cast Iron or Ductile Cast Iron ” in this chapter More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200048
EISBN: 978-1-62708-354-6
... iron and naturally give large numbers for impact resistance. When tested under identical conditions, e.g., in a Charpy V-notch impact test, the Charpy V-notch impact properties of nodular and malleable cast iron are low compared to cast steel (see Figure 3-31 ). Compacted Graphite Cast Iron...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.mgppis.t60400001
EISBN: 978-1-62708-258-7
... to liquid cast iron to nucleate graphite nodules in ductile (nodular) iron Formal Classification Systems Many nations have their own classification system for steels and cast irons. Because of the complexity of these different classification systems, only those used in the United States...
Image
Published: 01 March 2002
Fig. 2.51 Pearlitic ductile (nodular) cast iron (2.95% C, 0.36% Mn, 2.75% Si, and 0.09% Mg). Dark, rounded particles are graphite. 4% picral etch. 500× More
Image
Published: 01 March 2002
Fig. 1.30 Micrograph of a ferritic ductile (nodular) cast iron showing a microstructure consisting of ferrite (light etching constituent) and graphite nodules (dark gray constituent). Etched in 2% nital. 100× More
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300179
EISBN: 978-1-62708-323-2
..., size, and distribution (100×) Ductile Irons Ductile irons contain graphite nodules in essentially a steel matrix. Nodular graphite is not usually thought to be as effective in assisting oil lubrication as cast irons with flake graphite, but they are still often used for sliding wear...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.mgppis.t60400087
EISBN: 978-1-62708-258-7
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170062
EISBN: 978-1-62708-297-6
... iron hardenability normalizing alloying elements nodulizing agents Composition Elevated-temperature properties Introduction and Overview Ductile cast iron, also known as nodular iron or spheroidal-graphite (SG) iron, is cast iron in which the graphite is present as tiny spheres (nodules...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200295
EISBN: 978-1-62708-354-6
... with nodular graphite. Sometimes low carbon grades of CZ100 are requested by customers. The low carbon version almost always leads to gas defects. The low carbon version of CZ100 does not have advantage over the standard grades as the carbon segregates to the graphite while the nickel matrix already has a very...