Header menu link for other important links
X
Effect of boron on microstructure of intercritically heat affected zone (ICHAZ) treated modified 9CR-1MO steel weldments
Published in ASM International
2013
Pages: 511 - 516
Abstract
In the present study, evolution of microstructures in intercritical heat affected zone (ICHAZ) of boron added Mod 9Cr-lMo and Mod9Cr-lMo steel is investigated through heat treatment at875°Cfor different durations. Microstructural characterization of these heat treated specimens show that in B added Mod. 9Cr-lMo steels, lath morphology and original prior austenite grain boundaries were present even after prolonged exposure to the intercritical temperature. Whereas, in Mod 9Cr-lMo steel complete grain refinement and recovered lath martensite was observed. The mechanism of reconstitution of prior austenite grain with lath martensite having similar orientation in B added Mod 9Cr-lMo steel is attributed to a phenomenon so called as "austenite memory effect".
About the journal
JournalHeat Treatment and Surface Engineering - Proceedings of Heat Treatment and Surface Engineering, HTSE 2013
PublisherASM International
Open AccessNo
Concepts (18)
  •  related image
    Austenite
  •  related image
    Boron
  •  related image
    Grain boundaries
  •  related image
    Grain refinement
  •  related image
    Heat affected zone
  •  related image
    Heat treatment
  •  related image
    Martensite
  •  related image
    Microstructural evolution
  •  related image
    Surface treatment
  •  related image
    Heat-treated specimens
  •  related image
    ICHAZ SIMULATION
  •  related image
    INTERCRITICAL TEMPERATURES
  •  related image
    Memory effects
  •  related image
    Micro-structural characterization
  •  related image
    Modified 9cr-1mo steel
  •  related image
    PRIOR AUSTENITE GRAIN BOUNDARIES
  •  related image
    PRIOR AUSTENITE GRAINS
  •  related image
    Martensitic steel