• Effect of cerium and thermomechanical processing on microstructure and mechanical properties of Fe–10.5Al–0.8C alloy

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      https://www.ias.ac.in/article/fulltext/boms/032/05/0531-0536

    • Keywords

       

      Iron aluminides; cerium addition; air induction melting; electroslag remelting; EPMA.

    • Abstract

       

      The effect of cerium content and thermomechanical processing on structure and properties of Fe–10.5 wt.%Al–0.8 wt%C alloy has been investigated. Alloys were prepared by a combination of air induction melting with flux cover (AIMFC) and electroslag remelting (ESR). The ESR ingots were hot-forged and hotrolled at 1373 K as well as warm-rolled at 923 K and heat-treated. Hot-rolled, warm-rolled and heat treated alloys were examined using optical microscopy, scanning electron microscopy (SEM) and X-ray diffraction to understand the microstructure of these alloys. The ternary, Fe–10.5 wt.%Al–0.8 wt.%C alloy showed the presence of two phases; Fe–Al with bcc structure, and large volume fraction of Fe3AlC0.5 precipitates. Addition of cerium to Fe–10.5 wt.%Al–0.8 wt.%C alloy resulted in three phases, the additional phase being small volume fraction of fine cerium oxy-carbide precipitates. Improvement in tensile elongation from 3–6.4% was achieved by increasing the cerium content from 0.01–0.2 wt.% and further improvement in tensile elongation from 6.4–10% was achieved by warm-rolling and heat treatment.

    • Author Affiliations

       

      R G Baligidad1 Shivkumar Khaple1

      1. Defence Metallurgical Research Laboratory, Hyderabad 500 058, India
    • Dates

       
  • Bulletin of Materials Science | News

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