Master curve in upper region of ductile brittle transition: A modification based on local damage approach

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Abstract

The fracture behaviour of ferritic/ferritic martensitic steels in Ductile to Brittle Transition (DBT) region is well captured by Master Curve approach, except in the upper region of transition due to ductile tearing prior to cleavage. The fracture toughness behavior in the upper region of DBT is generally censored by Master Curve. In this work the Master Curve approach is modified to extend its applicability to the upper region of transition. The ductile tearing in the upper region of transition, increased sampled volume and constraint increment are addressed in this work using constraint parameter T stress and numerical analyses using GTN damage.

Detaljer

Författare
  • Abhishek Tiwari
  • R. N. Singh
  • Per Ståhle
  • J. K. Chakravartty
Enheter & grupper
Externa organisationer
  • Bhabha Atomic Research Centre
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Teknisk mekanik
  • Fysik
  • Metallurgi och metalliska material

Nyckelord

  • Master curve, ductile brittle transition, Weibull triaxiality, Weibull statictics
Originalspråkengelska
Sidor (från-till)1553-1560
Antal sidor8
TidskriftProcedia Structural Integrity
Volym2
StatusPublished - 2016 jan 1
PublikationskategoriForskning
Peer review utfördJa