Single-Step Small Strain Annealing for Low- CSLB Fraction Enhancement in 316L Austenitic Stainless Steels

Authors

  • อัญชลี บุญเลิศ
  • อรอุมา สันตวิธี
  • กรรณชัย กัลยาศิริ
  • ปัญญา ขันธ์สุวรรณ

Keywords:

Grain boundary engineering,, Coincident Site Lattice,, Thermomechanical-process,, SS316L

Abstract

This research aims to study the effect of one-step small stain annealing process to enhance the length fraction of special grain boundary (FSB) in 316L austenitic stainless steel. Special grain boundaries were defined by low sigma value (å3-å27) and their length fraction in the materials was evaluated by embedded software of SEM equipped with EBSD capability. Brandon’s criterion was employed to distinguish type of grain boundary according to Coincident Site Lattice (CSL) model. The result indicated that 3% pre-strain followed by 1000°C annealing gave a possible increment of FSB from 23.6 to 34.5%. Even though the increment was not satisfactory when compared to other publications this work proposed a possibility to implement FEM simulation to assess the influence of plastic strain variation across the cross section area of the deformed samples to the distribution of Grain boundary character distribution (GBCD).

References

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Published

2020-06-19

How to Cite

[1]
บุญเลิศ อ. . . . ., สันตวิธี อ. ., กัลยาศิริ ก., and ขันธ์สุวรรณ ป., “Single-Step Small Strain Annealing for Low- CSLB Fraction Enhancement in 316L Austenitic Stainless Steels”, Eng. & Technol. Horiz., vol. 33, no. 1, pp. 1–6, Jun. 2020.

Issue

Vol. 33 No. 1 (2016): January - March

Section

Academic Articles

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