Fracture and fatigue resistance of Mo-Si-B alloys for ultrahigh-temperature structural applications
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Fracture and fatigue resistance of Mo-Si-B alloys for ultrahigh-temperature structural applications

  • Author(s): Kruzic, J.J.
  • Schneibel, J.H.
  • Ritchie, R.O.
  • et al.
Abstract

Fracture and fatigue-crack growth properties are examined for a series of Mo-Mo3Si-Mo5SiB2 containing alloys, which utilize a continuous a-Mo matrix to achieve unprecedented room-temperature fracture resistance (>20 MPaAm). Mechanistically, these properties are explained in terms of toughening by crack trapping and crack bridging by the more ductile a-Mo phase.

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