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

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

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
Journal	Scripta Materialia
Publication status	Accepted/In press - 13 Jan 2021

Research Beacons, Institutes and Platforms

Dalton Nuclear Institute

Embargoed Document

AAM - Chang
Accepted author manuscript, 2.22 MB
Embargo ends: 4/02/31

Understanding the mechanisms controlling low potential stress corrosion cracking in nuclear reactors
Scenini, F. (PI), Burke, G. (CoI) & Quinta Da Fonseca, J. (CoI)
1/12/17 → 31/05/21
Project: Research

Cite this

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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 ~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.",

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

year = "2021",

month = jan,

day = "13",

language = "English",

journal = "Scripta Materialia",

issn = "1359-6462",

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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 - 2021/1/13

Y1 - 2021/1/13

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.

M3 - Article

SN - 1359-6462

JO - Scripta Materialia

JF - Scripta Materialia

ER -

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

Abstract

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Understanding the mechanisms controlling low potential stress corrosion cracking in nuclear reactors

Cite this