Three-dimensional atom probe analysis of boron segregation at austenite grain boundary in a low carbon steel - Effects of boundary misorientation and quenching temperature

Goro Miyamoto, Ai Goto, Naoki Takayama, Tadashi Furuhara

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Segregation of boron at random austenite grain boundaries with known misorientation angle in a boron-added low carbon steel quenched from austenite state at different temperatures was investigated quantitatively using three-dimensional atom probe. Boron segregation is reduced at low angle boundaries or low quenching temperatures. The latter result indicates that non-equilibrium boron segregation plays an important role and is enhanced at higher quenching temperature due to more excess vacancies and longer diffusion distance during quenching from higher temperature.

Original languageEnglish
Pages (from-to)168-171
Number of pages4
JournalScripta Materialia
Volume154
DOIs
Publication statusPublished - 2018 Sep

Keywords

  • Boron
  • Grain boundary
  • Segregation
  • Three-dimensional atom probe

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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