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      https://www.ias.ac.in/article/fulltext/boms/017/06/0633-0641

    • Keywords

       

      Ultrahigh strength steels; fracture toughness; threshold stress intensity for stress corrosion cracking; K ISCC ; segregation

    • Abstract

       

      The effect of alloying additions viz. cobalt, molybdenum, cerium and a combination of cobalt and molybdenum, on theKISCC of NiSiCr steel in 3·5% NaCl aqueous solution was studied. Addition of cobalt to NiSiCr steel resulted in an increase in theKISCC whereas molybdenum addition decreased theKISCC. Cerium addition did not affect theKISCC while the combination of cobalt and molybdenum resulted in an increase in theKISCC although not as much as in the case of cobalt addition. The effect of alloying elements onKISCC could be attributed to their effect on the critical fracture stress and yield strength.

    • Author Affiliations

       

      S V Kamat1 2 G Malakondaiah1 M Srinivas1 3 J Marthanda Murthy1 P Rama Rao1 4

      1. Defence Metallurgical Research Laboratory, Hyderabad - 500 258, India
      2. Mechanical and Materials Engineering Department, Washington State University, Pullman, WA - 991 64-2920, USA
      3. Materials Science and Engineering Department, Northwestern University, Evanston, IL - 60208, USA
      4. Jawaharlal Nehru Centre for Advanced Scientific Research, IISc Campus, Bangalore - 560 012, India
    • Dates

       
  • Bulletin of Materials Science | News

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