Effect of austenitization temperature on microstructure and mechanical properties of low-carbon-equivalent carbidic austempered ductile iron

Vinayak Dakre; D. R. Peshwe; S. U. Pathak; Ajay Likhite

doi:10.1007/s12613-018-1625-4

Volume 25 Issue 7

Jul. 2018

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2018 > 25(7): 770-778

Vinayak Dakre, D. R. Peshwe, S. U. Pathak, and Ajay Likhite, Effect of austenitization temperature on microstructure and mechanical properties of low-carbon-equivalent carbidic austempered ductile iron, Int. J. Miner. Metall. Mater., 25(2018), No. 7, pp. 770-778. https://doi.org/10.1007/s12613-018-1625-4

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Vinayak Dakre, D. R. Peshwe, S. U. Pathak, and Ajay Likhite, Effect of austenitization temperature on microstructure and mechanical properties of low-carbon-equivalent carbidic austempered ductile iron, Int. J. Miner. Metall. Mater., 25(2018), No. 7, pp. 770-778. https://doi.org/10.1007/s12613-018-1625-4

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Research Article

Effect of austenitization temperature on microstructure and mechanical properties of low-carbon-equivalent carbidic austempered ductile iron

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Corresponding author:
Vinayak Dakre E-mail: vinayakdakre2007@gmail.com
Received: 21 September 2017; Revised: 12 April 2018; Accepted: 13 April 2018

Abstract

Abstract

The wear resistances of austempered ductile iron (ADI) were improved through introduction of a new phase (carbide) into the matrix by addition of chromium. In the present investigation, low-carbon-equivalent ductile iron (LCEDI) (CE=3.06%, and CE represents carbon-equivalent) with 2.42% chromium was selected. LCEDI was austenitized at two different temperatures (900 and 975℃) and soaked for 1 h and then quenched in a salt bath at 325℃ for 0 to 10 h. Samples were analyzed using optical microscopy and X-ray diffraction. Wear tests were carried out on a pin-on-disk-type machine. The effect of austenization temperature on the wear resistance, impact strength, and the microstructure was evaluated. A structure–property correlation based on the observations is established.
- low carbon equivalent ductile iron (LCEDI);
- carbidic austempered ductile iron (CADI);
- wear test;
- austenitization temperature;
- impact strength

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References

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