• Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/042/05/0234

    • Keywords

       

      Low-density steel; iron aluminium alloys; lightweight steels; mechanical properties.

    • Abstract

       

      Correlation of microstructure and mechanical properties of hot-rolled Fe–7 wt.% Al with varying carbon contents has been investigated in detail. The microstructures of the alloys change significantly with an increase in the carboncontent. An alloy with 0.012 wt.% carbon shows a single ferrite phase, whereas with increase in carbon up to 0.65 wt.%, the microstructure evolves into a dual phase consisting of ferrite and $\kappa$-pearlite. At about 1.5 wt.% carbon, the alloy exhibits only $\kappa$-pearlite and with a further increase in carbon to 2.2 wt.%, an additional phase starts precipitating in the form of graphite. The room temperature tensile strength of the alloy increased significantly with an increase in the carbon content, which is in agreement with the microstructure. The yield strength and hardness of the steels with different carbon contents can becorrelated well with the inter-barrier spacing in different steels.

    • Author Affiliations

       

      SHIVKUMAR KHAPLE1 2 D V V SATYANARAYANA1 V V SATYA PRASAD1 BRAHMA RAJU GOLLA2

      1. Defence Metallurgical Research Laboratory, Hyderabad 500058, India
      2. National Institute of Technology, Warangal 506004, India
    • Dates

       
  • Bulletin of Materials Science | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2017-2019 Indian Academy of Sciences, Bengaluru.