• A first report on fracture toughness ofbcc iron alloys as influenced by solutes: opposite effects of silicon and cobalt

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    • Keywords


      Ductile alloys; alloy softening; fracture toughnessJIC; alloy hardening; critical fracture stress; cleavage fracture

    • Abstract


      The effect of solutes on resistance to fracture of body centred cubic iron single-phase solid-solution alloys has been investigated. TheJ-integral method has been used for the measurement of ductile fracture toughness. TheJIC values so determined quantitatively indicate the extent of degradation in fracture toughness due to the addition of hardening solute silicon. Cobalt addition results in alloy softening. The measuredJIC values clearly demonstrate the toughening effect of cobalt addition as a solute, which result renders the case of Fe-Co solid-solution alloys interesting.

    • Author Affiliations


      M Srinivas1 G Malakondaiah1 P Rama Rao1

      1. Defence Metallurgical Research Laboratory, P O Kanchanbagh, Hyderabad - 500 258, India
    • Dates

  • Bulletin of Materials Science | News

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