The morphology and crystallography of lath martensite in Fe-C alloys

S. Morito, H. Tanaka, R. Konishi, T. Furuhara, T. Maki

Research output: Contribution to journalArticlepeer-review

798 Citations (Scopus)

Abstract

The morphology and crystallography of lath martensite in Fe-C alloys containing various carbon contents from 0.0026 to 0.61% were studied by analyzing electron back scattered diffraction patterns in scanning electron microscopy and Kikuchi diffraction patterns in transmission electron microscopy. As carbon content increases, the sizes of both packet and block decrease. In low carbon steels (0.0026-0.38%C), a block which is observed as having different contrasts under optical microscopy contains two groups (sub-blocks) of laths which are of two K-S variants with a misorientation of about 10 degrees. On the other hand, in the high carbon alloy (0.61%C), a block consists of laths of a single K-S variant.

Original languageEnglish
Pages (from-to)1789-1799
Number of pages11
JournalActa Materialia
Volume51
Issue number6
DOIs
Publication statusPublished - 2003 Apr 2
Externally publishedYes

Keywords

  • Electron back scattered diffraction pattern
  • Iron-carbon alloy
  • Kikuchi diffraction pattern
  • Lath martensite
  • Morphology and crystallography

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Polymers and Plastics
  • Metals and Alloys

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