NDLI: Iron Powder Treated Gray Irons: Critical Shape Characteristics for Graphite Nuclei

Content Provider	Springer Nature Link
Author	Stan, Stelian Chisamera, Mihai Riposan, Iulian Ivan, Nicoleta Barstow, Michael
Copyright Year	2011
Abstract	A program was conducted to research how to characterize the size and shape of micro-particles. These can act as graphite nuclei, but are altered by adding a commercial iron powder, or after a similar treatment combined with inoculation. Resin sand mold (RSM) and metal mold (MM) solidified sample structures were subjected to automatic image analysis. In general, a higher cooling rate, typical for MM solidification, favors smaller size and more compact particles, even in RSM media. Iron powder treatment led to the largest particles with unusual morphologies, better defined by complex shape factors, which employ actual perimeters, rather than the simpler median size and aspect ratio method. Conventional inoculation employed after an iron powder treatment altered the particles (smaller and more compact), which benefited their effectiveness to act as graphite nuclei, especially at slower solidification rates in RSMs. The results confirm that promoting more compact micro-inclusions, at smaller sizes, involved in graphite nucleation, reduces the sensitivity to chill and improves the eutectic cell characteristics in gray cast iron.
Starting Page	1793
Ending Page	1799
Page Count	7
File Format	PDF
ISSN	10599495
Journal	Journal of Materials Engineering and Performance
Volume Number	21
Issue Number	8
e-ISSN	15441024
Language	English
Publisher	Springer US
Publisher Date	2011-12-02
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	chill eutectic cell graphite nuclei gray iron inoculation iron powder morphology shape factors Engineering Design Quality Control, Reliability, Safety and Risk Tribology, Corrosion and Coatings Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science Mechanical Engineering

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