2018-Sustainable Industrial Processing Summit
SIPS2018 Volume 4. Mamalis Intl. Symp. / Advanced Manufacturing
| Editors: | F. Kongoli, A. G. Mamalis, K. Hokamoto |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2018 |
| Pages: | 352 pages |
| ISBN: | 978-1-987820-88-1 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Nanostructured Austempered Ductile Cast Iron (ADI)
Susil Putatunda1; Saranya Pannerselvam1;1WAYNE STATE UNIVERSITY, Detroit, United States;
Type of Paper: Regular
Id Paper: 315
Topic: 48
Abstract:
Austempered Ductile Cast Iron (ADI) has emerged as an important engineering material in recent years, due to its excellent combination of mechanical properties such as high strength with good ductility, fatigue strength, fracture toughness, and excellent wear resistance. This combination of properties is achieved in ADI by the microstructure consisting of acicular ferrite and high carbon austenite. Refining of the ausferritic microstructure could further enhance the mechanical properties of ADI.
An investigation was carried out to develop nanostructured austempered ductile cast iron (ADI) consisting of bainitic ferrite and high carbon austenite. This was achieved by applying a unique process consisting of austenitization and subsequent high temperature plastic deformation at the same austenitizing temperature, followed by single step and two step austempering. The influence of plastic deformation on the microstructure and mechanical properties of nanostructured ADI has been examined. Test results indicates that high temperature plastic deformation together with austempering can result in nanostructured grains in ADI. TEM micrograph was compared with conventional ADI, which provided a detailed insight of the nanostructured ADI.
Keywords:
Ferrous and non-ferrous materials; Metals; Nanoparticles; Nanostructured materials;References:
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[3] J.L. Doong, F.C. Ju, H.S. Chen and L.W. Chen, "Influence of Austempering on Fracture Toughness in Bainitic Nodular Cast Iron", Journal of Materials Science Letters, pp. 555-558, (1986).
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