Effect of dynamically recrystallized austenite on the martensite start temperature of martensitic transformation

  • Huang J
  • Xu Z
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Abstract

The effect of dynamically recrystallized austenite on the martensite start temperature, Ms, in hot-deformed Fe-32% Ni alloy was studied by measuring its electrical resistance. Differing from the statically recrystallized structure, the dynamically recrystallized grains have heterogeneous dynamic substructures. The growing dynamic recrystallization grain with a dislocation density in a gradient distribution contains a few mobile dislocations near the grain boundary. These mobile dislocations promote the martensitic nucleation and increase the Mstemperature. © 2006 Elsevier B.V. All rights reserved.

Author-supplied keywords

  • Dynamic recrystallization
  • Grain size
  • Hot deformed austenite
  • Martensitic transformation
  • Mstemperature

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Authors

  • Jie Huang

  • Zhou Xu

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