Solid state decarburization of high carbon ferrochromium

6^th International Conference and Exhibition on Materials Science and Engineering

September 12-14, 2016 Atlanta, USA

A Bhalla, C S Kucukkaragoz and R H Eric

University of the Witwatersrand, South Africa

Posters & Accepted Abstracts: J Material Sci Eng

Abstract :

A high carbon ferrochromium alloy containing 6.8% C was subjected to solid state decarburization process conducted under a gaseous mixture of CO and CO2 at temperatures between 800oC and 1100oC. The carbide phases present in the initial alloy was identified in the form of (FeCr)7C3. The degree of decarburisation increased with increasing temperature and decreasing particle size. A maximum of 58% decarburization was achieved with (-1.00+0.50) �¼m size fraction group reacted at 1100oC under pure CO2 which yielded 2.82% C content in the final decarburized alloy. The carbide phases present in the final alloy was identified by XRD analysis in the form of Fe3C and Cr23C6 . The carbon analysis were based on the SEM-EDS results and verified according to the mass balance calculations. The final carbon content which depends upon temperature and particle size is in the range of carbon content of a medium carbon ferrochromium alloy.

Biography :

A Bhalla is currently pursuing his PhD from the University of Witwatersrand under the supervision of Prof. R Hurman Eric.

Email: amittbhalla@gmail.com