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 language | English |
|---|---|
| Pages (from-to) | 168-171 |
| Number of pages | 4 |
| Journal | Scripta Materialia |
| Volume | 154 |
| DOIs | |
| Publication status | Published - 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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Cite this
Miyamoto, G., Goto, A., Takayama, N., & Furuhara, T. (2018). Three-dimensional atom probe analysis of boron segregation at austenite grain boundary in a low carbon steel - Effects of boundary misorientation and quenching temperature. Scripta Materialia, 154, 168-171. https://doi.org/10.1016/j.scriptamat.2018.05.046