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pearlitic malleable iron

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Published: 01 December 2001
Fig. 3 Stress-rupture plot for (a) pearlitic malleable iron and (b) alloyed pearlitic malleable iron. The solid lines are curves determined by the method of least squares from the existing data. The dashed lines define the 90% symmetrical tolerance interval. The lower dashed curve defines time More
Image
Published: 01 January 2022
Fig. 8.4 Microstructure of pearlitic malleable iron. Courtesy of University of Leeds More
Image
Published: 01 August 2018
Fig. 17.114 Pearlitic blackheart malleable cast iron. Temper graphite in a pearlite matrix. Small regions of ferrite. Courtesy of DoIT-PoMS, Department of Materials Science and Metallurgy, University of Cambridge. More
Image
Published: 01 March 2002
Fig. 2.53 Pearlitic malleable cast iron (3.21% C, 0.32% Mn, and 0.47% Si). Dark areas are “temper carbon.” 4% picral. 500× More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2022
DOI: 10.31399/asm.tb.isceg.t59320157
EISBN: 978-1-62708-332-4
... chemical compositions that produce white iron in the as-cast stage for relatively thin section thicknesses. Manganese, a strong pearlite stabilizer, is higher, up to 1.3% in pearlitic malleable iron. Typical compositions for malleable iron Table 8.1 Typical compositions for malleable iron...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170100
EISBN: 978-1-62708-297-6
... malleable cast iron. Subsequent variations in post-annealing heat treatments can produce malleable irons with ferritic, pearlitic, or martensitic microstructures. Fig. 1 Microstructure of a typical malleable cast iron showing graphite in the form of temper carbon. 4% picral etch. 250× Annealing...
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
... to neutralize its effects Tungsten ≤0.05 Promotes pearlite Vanadium ≤0.08 Forms carbides; promotes pearlite. Source: Ref 10.1 Matrix Microstructure In addition to the carbon-rich phase, cast irons (gray, nodular, compacted, and malleable) have a matrix (steel) structure that may...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2022
DOI: 10.31399/asm.tb.isceg.t59320031
EISBN: 978-1-62708-332-4
...) for the dissociation of iron carbide into graphite (clusters) and austenite. Controlled cooling allows austenite transformation into ferrite and more graphite. This results in ferritic malleable iron. Rapid cooling through the critical temperature range transforms austenite to pearlite, resulting in pearlitic...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240453
EISBN: 978-1-62708-251-8
... a starting material for the production of malleable cast irons ( Section 24.4 in this chapter). 24.2 Gray Cast Iron Gray cast irons are one of the most widely used types of cast irons. The microstructure of gray cast irons consists of flake graphite, typically in a pearlite matrix. Gray irons are Fe...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140175
EISBN: 978-1-62708-264-8
... that the mechanical properties of the two irons are comparable with the same type of ferrite-pearlite microstructure. Grades of malleable cast iron Table 16.5 Grades of malleable cast iron Grade Matrix Tensile strength/yield strength/elongation ASTM No. Ferritic malleable Ferrite 53-35-18 35018...
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
... not form. From the cementite in pearlite, when there is graphitization at temperatures around 700 °C (1290 °F). In addition, for malleable cast irons, graphite may form due to the decomposition (graphitization) of cementite originally formed in a white cast iron. In the case of pro-eutectic...
Image
Published: 01 August 2018
Fig. 17.96 Cross section of a connection made of cast iron that was transformed into malleable iron by decarburization (whiteheart malleable iron). The white region close to the surface is composed of ferrite (complete decarburization) and the darker region, closer to the center, is composed More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2022
DOI: 10.31399/asm.tb.isceg.9781627083324
EISBN: 978-1-62708-332-4
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310331
EISBN: 978-1-62708-326-3
... ductility grades of ductile iron are often annealed; permanent mold cast gray irons are annealed or normalized; and pearlitic malleable iron and high-strength grades of ductile iron may be either air or liquid quenched and tempered to obtain their specified strength and hardnesses. General Considerations...
Image
Published: 01 March 2006
Fig. 2 Typical microstructures of four types of cast iron. (a) Gray iron showing graphite flakes (black) in a pearlite matrix. 380×. (b) White cast iron showing massive carbides (white) and pearlite. 380×. Malleable iron showing graphite nodules in a ferrite matrix. 380×. (d) Ductile iron More
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 March 2002
DOI: 10.31399/asm.tb.mgppis.t60400049
EISBN: 978-1-62708-258-7
... complete, as in Fig. 3.24 , a pearlitic malleable iron is produced. Thus, Fig. 3.24 shows a pearlitic malleable iron with rims of ferrite around the temper carbon in a matrix of pearlite. Because of its appearance, this type of microstructure is called “bull’s-eye” malleable iron. The heat treatment...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.mgppis.t60400001
EISBN: 978-1-62708-258-7
... Abstract This chapter introduces the metallographer to the various types of steels and cast irons and explains how they are classified and defined. Classification and designation details are provided for plain carbon steels, alloy steels, and gray, white, ductile, and malleable cast irons...
Image
Published: 01 August 2018
Fig. 17.100 Whiteheart malleable cast iron. Region between center and surface. To the left side of the image: ferrite. To the right side of the image: pearlite and temper graphite. The volume fraction of pearlite increases from left to right. Etchant: picral. More
Image
Published: 01 December 2001
Fig. 2 Tensile properties versus hardness for two tempered pearlitic malleable cast irons and as-cast ductile iron More