Microstructure of thin-wall ductile iron castings

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Step plate castings with section thicknesses of 1.5 mm to 6 mm and individual (single) castings with section thicknesses of 2 mm to 6 mm were produced using a ductile iron chemistry. Microstructures of these thin wall ductal iron castings were characterized quantitatively using an image analyzer. Matrix structure (amount of pearlite, ferrite, and massive carbides) and graphite structure (volume fraction, nodule size, nodule content, and nodularity) were investigated as a function of section thickness. Pearlite content, nodule count, and nodularity increased with decreasing section thickness, whereas the nodule size decreased. Nodule content exceeded 2000 nodules per mm{sup 2} at ... continued below

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949-959; paper 03-136

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Dogan, Omer N.; Schrems, Karol K. & Hawk, Jeffrey A. January 1, 2003.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 73 times , with 13 in the last month . More information about this article can be viewed below.

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Step plate castings with section thicknesses of 1.5 mm to 6 mm and individual (single) castings with section thicknesses of 2 mm to 6 mm were produced using a ductile iron chemistry. Microstructures of these thin wall ductal iron castings were characterized quantitatively using an image analyzer. Matrix structure (amount of pearlite, ferrite, and massive carbides) and graphite structure (volume fraction, nodule size, nodule content, and nodularity) were investigated as a function of section thickness. Pearlite content, nodule count, and nodularity increased with decreasing section thickness, whereas the nodule size decreased. Nodule content exceeded 2000 nodules per mm{sup 2} at the thinnest sections. Statistical analysis was performed to investigate the effect of casting parameters on the microstructure.

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949-959; paper 03-136

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  • 107th Metalcasting Congress & CastExpo, Milwaukee, WI, Apr. 26-29, 2003

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  • Report No.: DOE/ARC-2004-041
  • Grant Number: None
  • Office of Scientific & Technical Information Report Number: 898999
  • Archival Resource Key: ark:/67531/metadc878766

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Office of Scientific & Technical Information Technical Reports

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  • January 1, 2003

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  • Sept. 22, 2016, 2:13 a.m.

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  • Nov. 4, 2016, 2:09 p.m.

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Dogan, Omer N.; Schrems, Karol K. & Hawk, Jeffrey A. Microstructure of thin-wall ductile iron castings, article, January 1, 2003; (digital.library.unt.edu/ark:/67531/metadc878766/: accessed June 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.