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Author: search.filters.author.Dabhade, V.V.Has files: No

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    Effect of chromium addition on properties of sinter-forged Fe-Cu-C alloy steel
    (World Scientific Publishing Co. Pte Ltd wspc@wspc.com.sg, 2018) Kulkarni, V.R.; Nayak, J.; Dabhade, V.V.
    The present work deals with sinter-forged powder metallurgical (P/M) steels alloyed with chromium by addition of ferrochrome powder, which allows a close control over the chromium contents of alloy steels. Chromium contents can be varied by adjusting appropriately weighed ferrochrome powder in the P/M mixtures. Fe-Cu (2%) and C (0.7%) is the base composition for this P/M alloy steel. Study with the addition of 0.5% and 3% chromium by weight in the form of ferrochrome powder is carried out. The P/M alloy steel of base composition with no chromium content is also prepared for comparative study. The paper deals with these three alloy steels formed by the sinter-forging technique of powder metallurgy. The results of hardness and wear in hardened and tempered condition are reported in the present work. © 2018 World Scientific Publishing Company.
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    Effect of heat treatment on properties of sinter forged Fe-Cu-C-Cr steel
    (Zibeline International Publishing Sdn. Bhd., 2019) Kulkarni, V.R.; Nayak, J.; Dabhade, V.V.
    Powder metallurgy is industrially well appreciated manufacturing technique. Many components are now manufactured by powder metallurgical route than conventional manufacturing techniques. It is customary for wrought steels to compare the properties of alloy in austempered condition with that in hardened and tempered condition. However limited data is available for austempered powder metallurgical components. In this work sinter forging technique is used to prepare samples from metal powders and subjected to austempering as well as conventional hardening and tempering heat treatments. Effect of these heat treatments on the microstructure, hardness and wear properties of Fe-2Cu-0.7C-2Cr sinter forged alloy are studied. From the results it is concluded that though hardness in hardened and tempered condition is lower (26 HRc) than that of austempered condition (39 HRc) its wear performance is better. © 2019 Rockefeller University Press. All rights reserved.