The effect of low temperature heat treatment on stress corrosion crack initiation in machined 316L stainless steel in high-temperature hydrogenated water

Litao Chang; Kudzanai Mukahiwa; Jonathan Duff; M. Grace Burke; Fabio Scenini

doi:10.1016/j.scriptamat.2021.113742

The effect of low temperature heat treatment on stress corrosion crack initiation in machined 316L stainless steel in high-temperature hydrogenated water

Litao Chang
, Kudzanai Mukahiwa
, Jonathan Duff
, M. Grace Burke
, Fabio Scenini

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

A notable reduction of the stress corrosion cracking (SCC) initiation susceptibility was identified for machined cold-rolled 316L stainless steel that received a 650°C/10 hours heat-treatment prior to slow strain rate tensile (SSRT) testing in high-temperature hydrogenated water. The cracks per unit area of the machined surface of heat-treated specimens decreased by ~50% compared to as-machined surfaces, and by >70% with respect to polished surfaces. The results were ascribed to recrystallization of the ultrafine-grains present in the outer deformation layer of the machined surface, which resulted in a reduction of the tensile residual stress and nano-indentation hardness.

Original language	English
Article number	113742
Journal	Scripta Materialia
Volume	195
DOIs	https://doi.org/10.1016/j.scriptamat.2021.113742
State	Published - Apr 1 2021
Externally published	Yes

Keywords

Austenitic stainless steel
Heat treatment
High-temperature water
Stress corrosion cracking
Ultrafine-grains

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10.1016/j.scriptamat.2021.113742

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title = "The effect of low temperature heat treatment on stress corrosion crack initiation in machined 316L stainless steel in high-temperature hydrogenated water",

abstract = "A notable reduction of the stress corrosion cracking (SCC) initiation susceptibility was identified for machined cold-rolled 316L stainless steel that received a 650°C/10 hours heat-treatment prior to slow strain rate tensile (SSRT) testing in high-temperature hydrogenated water. The cracks per unit area of the machined surface of heat-treated specimens decreased by \textasciitilde{}50\% compared to as-machined surfaces, and by >70\% with respect to polished surfaces. The results were ascribed to recrystallization of the ultrafine-grains present in the outer deformation layer of the machined surface, which resulted in a reduction of the tensile residual stress and nano-indentation hardness.",

keywords = "Austenitic stainless steel, Heat treatment, High-temperature water, Stress corrosion cracking, Ultrafine-grains",

author = "Litao Chang and Kudzanai Mukahiwa and Jonathan Duff and Burke, \{M. Grace\} and Fabio Scenini",

note = "Publisher Copyright: {\textcopyright} 2021 Acta Materialia Inc. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/)",

year = "2021",

month = apr,

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doi = "10.1016/j.scriptamat.2021.113742",

language = "English",

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journal = "Scripta Materialia",

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TY - JOUR

T1 - The effect of low temperature heat treatment on stress corrosion crack initiation in machined 316L stainless steel in high-temperature hydrogenated water

AU - Chang, Litao

AU - Mukahiwa, Kudzanai

AU - Duff, Jonathan

AU - Burke, M. Grace

AU - Scenini, Fabio

PY - 2021/4/1

Y1 - 2021/4/1

N2 - A notable reduction of the stress corrosion cracking (SCC) initiation susceptibility was identified for machined cold-rolled 316L stainless steel that received a 650°C/10 hours heat-treatment prior to slow strain rate tensile (SSRT) testing in high-temperature hydrogenated water. The cracks per unit area of the machined surface of heat-treated specimens decreased by ~50% compared to as-machined surfaces, and by >70% with respect to polished surfaces. The results were ascribed to recrystallization of the ultrafine-grains present in the outer deformation layer of the machined surface, which resulted in a reduction of the tensile residual stress and nano-indentation hardness.

AB - A notable reduction of the stress corrosion cracking (SCC) initiation susceptibility was identified for machined cold-rolled 316L stainless steel that received a 650°C/10 hours heat-treatment prior to slow strain rate tensile (SSRT) testing in high-temperature hydrogenated water. The cracks per unit area of the machined surface of heat-treated specimens decreased by ~50% compared to as-machined surfaces, and by >70% with respect to polished surfaces. The results were ascribed to recrystallization of the ultrafine-grains present in the outer deformation layer of the machined surface, which resulted in a reduction of the tensile residual stress and nano-indentation hardness.

KW - Austenitic stainless steel

KW - Heat treatment

KW - High-temperature water

KW - Stress corrosion cracking

KW - Ultrafine-grains

UR - https://www.scopus.com/pages/publications/85099710875

U2 - 10.1016/j.scriptamat.2021.113742

DO - 10.1016/j.scriptamat.2021.113742

M3 - Article

AN - SCOPUS:85099710875

SN - 1359-6462

VL - 195

JO - Scripta Materialia

JF - Scripta Materialia

M1 - 113742

ER -

The effect of low temperature heat treatment on stress corrosion crack initiation in machined 316L stainless steel in high-temperature hydrogenated water

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Keywords

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