Topological analysis of martensite morphology in dual-phase steels

N. Sato, M. Ojima, S. Morooka, Y. Tomota, Y. Adachi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)


Martensite morphology such as connectivity or dispersivity in ferrite (F)/martensite (M) dual-phase (DP) steels was investigated from topological viewpoint to reveal the effect of the martensite morphology on the mechanical properties. Topological analysis permits evaluation of the microstructural connectivity and dispersivity by measuring the number of handles, independent bodies and genus, etc. The topological analysis was performed on three-dimensional (3D) reconstructed images of the microstructure with different connectivity, dispersivity, volume fraction and hardness of martensite in DP steels that were prepared by changing the intercritical annealing temperature. The connectivity and the volume fraction of martensite increased while the dispersivity and hardness of it decreased with increasing annealing temperature. The effect of connectivity and dispersivity as well as volume fraction and hardness, in particular, on work hardening behavior was individually evaluated at a given strain.

Original languageEnglish
Title of host publicationTHERMEC 2011 Supplement
PublisherTrans Tech Publications Ltd
Number of pages5
ISBN (Print)9783037853047
Publication statusPublished - 2012
Externally publishedYes
Event7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011 - Quebec City, QC, Canada
Duration: 2011 Aug 12011 Aug 5

Publication series

NameAdvanced Materials Research
ISSN (Print)1022-6680


Other7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011
CityQuebec City, QC


  • 3D-image based stereology
  • Ferrite-martensite dual phase steel
  • Martensite morphology
  • Topology

ASJC Scopus subject areas

  • Engineering(all)


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