A method to compare the effects of the grain boundary misorientation and grain boundary plane orientation on thermal sensitisation

Kuo Yuan; Xiangli Zhong; Elisabeth Francis; Ronald Clark; Matthew Peel; Mahmoud Mostafavi

doi:10.1016/j.ijpvp.2025.105619

A method to compare the effects of the grain boundary misorientation and grain boundary plane orientation on thermal sensitisation

Kuo Yuan, Xiangli Zhong, Elisabeth Francis, Ronald Clark, Matthew Peel, Mahmoud Mostafavi

Research output: Contribution to journal › Article (Academic Journal) › peer-review

Abstract

Thermal sensitisation of austenitic stainless steel may cause the premature failure of piping materials at an elevated temperature due to loss of corrosion resistance. Grain boundary properties are widely studied as the factors of thermal sensitisation. In this research, a new method is proposed to compare the relationship between thermal sensitisation of individual boundaries with two grain boundary properties: grain boundary misorientation and grain boundary plane orientation. A heat-treated UNS S30400 stainless steel sample was serial-sectioned by FIB (Focused Ion Beam), and two grain boundary properties can be obtained from the 3D reconstructed volume. EDS (Energy-Dispersive X-ray Spectroscopy) was performed on two foils extracted from the remaining material to quantify thermal sensitisation by measuring the chromium depletion of individual boundaries.

Original language	English
Article number	105619
Journal	International Journal of Pressure Vessels and Piping
Volume	218
Issue number	Part B
DOIs	https://doi.org/10.1016/j.ijpvp.2025.105619
Publication status	Published - 1 Dec 2025

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title = "A method to compare the effects of the grain boundary misorientation and grain boundary plane orientation on thermal sensitisation",

abstract = "Thermal sensitisation of austenitic stainless steel may cause the premature failure of piping materials at an elevated temperature due to loss of corrosion resistance. Grain boundary properties are widely studied as the factors of thermal sensitisation. In this research, a new method is proposed to compare the relationship between thermal sensitisation of individual boundaries with two grain boundary properties: grain boundary misorientation and grain boundary plane orientation. A heat-treated UNS S30400 stainless steel sample was serial-sectioned by FIB (Focused Ion Beam), and two grain boundary properties can be obtained from the 3D reconstructed volume. EDS (Energy-Dispersive X-ray Spectroscopy) was performed on two foils extracted from the remaining material to quantify thermal sensitisation by measuring the chromium depletion of individual boundaries.",

author = "Kuo Yuan and Xiangli Zhong and Elisabeth Francis and Ronald Clark and Matthew Peel and Mahmoud Mostafavi",

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A method to compare the effects of the grain boundary misorientation and grain boundary plane orientation on thermal sensitisation. / Yuan, Kuo; Zhong, Xiangli; Francis, Elisabeth et al.
In: International Journal of Pressure Vessels and Piping, Vol. 218, No. Part B, 105619, 01.12.2025.

Research output: Contribution to journal › Article (Academic Journal) › peer-review

TY - JOUR

T1 - A method to compare the effects of the grain boundary misorientation and grain boundary plane orientation on thermal sensitisation

AU - Yuan, Kuo

AU - Zhong, Xiangli

AU - Francis, Elisabeth

AU - Clark, Ronald

AU - Peel, Matthew

AU - Mostafavi, Mahmoud

PY - 2025/12/1

Y1 - 2025/12/1

N2 - Thermal sensitisation of austenitic stainless steel may cause the premature failure of piping materials at an elevated temperature due to loss of corrosion resistance. Grain boundary properties are widely studied as the factors of thermal sensitisation. In this research, a new method is proposed to compare the relationship between thermal sensitisation of individual boundaries with two grain boundary properties: grain boundary misorientation and grain boundary plane orientation. A heat-treated UNS S30400 stainless steel sample was serial-sectioned by FIB (Focused Ion Beam), and two grain boundary properties can be obtained from the 3D reconstructed volume. EDS (Energy-Dispersive X-ray Spectroscopy) was performed on two foils extracted from the remaining material to quantify thermal sensitisation by measuring the chromium depletion of individual boundaries.

AB - Thermal sensitisation of austenitic stainless steel may cause the premature failure of piping materials at an elevated temperature due to loss of corrosion resistance. Grain boundary properties are widely studied as the factors of thermal sensitisation. In this research, a new method is proposed to compare the relationship between thermal sensitisation of individual boundaries with two grain boundary properties: grain boundary misorientation and grain boundary plane orientation. A heat-treated UNS S30400 stainless steel sample was serial-sectioned by FIB (Focused Ion Beam), and two grain boundary properties can be obtained from the 3D reconstructed volume. EDS (Energy-Dispersive X-ray Spectroscopy) was performed on two foils extracted from the remaining material to quantify thermal sensitisation by measuring the chromium depletion of individual boundaries.

U2 - 10.1016/j.ijpvp.2025.105619

DO - 10.1016/j.ijpvp.2025.105619

M3 - Article (Academic Journal)

SN - 0308-0161

VL - 218

JO - International Journal of Pressure Vessels and Piping

JF - International Journal of Pressure Vessels and Piping

IS - Part B

M1 - 105619

ER -

A method to compare the effects of the grain boundary misorientation and grain boundary plane orientation on thermal sensitisation

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