Skip to main content
placeholder image

Twins or the omega phase: Which is it in high carbon steels?

Journal Article


Abstract


  • Electron diffraction coupled with aberration-corrected (AC) scanning transmission electron microscopy (STEM) is used to image, identify and confirm the structure producing double diffracted spots seen in electron diffraction patterns in twinned high-carbon steels. The experimental and simulated data show that regions comprising: (i) overlaps between a twin and the matrix or, (ii) overlapping twins, create projected structures that are similar to the �� phase observed in other metastable bcc systems. Thus, AC STEM is proficient in the definitive identification of twins in bcc high carbon steels or nanoscale phases in metastable bcc systems.

Publication Date


  • 2020

Citation


  • Casillas, G., Song, W., & Gazder, A. A. (2020). Twins or the omega phase: Which is it in high carbon steels?. Scripta Materialia, 186, 293-297. doi:10.1016/j.scriptamat.2020.05.037

Scopus Eid


  • 2-s2.0-85085737927

Start Page


  • 293

End Page


  • 297

Volume


  • 186

Issue


Place Of Publication


Abstract


  • Electron diffraction coupled with aberration-corrected (AC) scanning transmission electron microscopy (STEM) is used to image, identify and confirm the structure producing double diffracted spots seen in electron diffraction patterns in twinned high-carbon steels. The experimental and simulated data show that regions comprising: (i) overlaps between a twin and the matrix or, (ii) overlapping twins, create projected structures that are similar to the �� phase observed in other metastable bcc systems. Thus, AC STEM is proficient in the definitive identification of twins in bcc high carbon steels or nanoscale phases in metastable bcc systems.

Publication Date


  • 2020

Citation


  • Casillas, G., Song, W., & Gazder, A. A. (2020). Twins or the omega phase: Which is it in high carbon steels?. Scripta Materialia, 186, 293-297. doi:10.1016/j.scriptamat.2020.05.037

Scopus Eid


  • 2-s2.0-85085737927

Start Page


  • 293

End Page


  • 297

Volume


  • 186

Issue


Place Of Publication