Investigation into the effects of prior plasticity on creep accumulation in 316H stainless steel

Chris  Allen; Harry Coules; Christopher E Truman

doi:10.3390/psf2022004016

Investigation into the effects of prior plasticity on creep accumulation in 316H stainless steel

Chris Allen^*
, Harry Coules
, Christopher E Truman

^*Corresponding author for this work

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

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Abstract

Steel components in the boilers of nuclear reactors are subject to high temperatures and varying loading conditions. This can introduce time-dependent and time-independent plasticity, which can interact with one another. Specimens of 316H austenitic stainless steel were heated to 550 C and tensile pre-strained to 8%, 11% and 14% followed by 200 h, 280 MPa creep tests. These tests showed an increase in creep resistance with increasing tensile pre-strain. Macroscale simulations using RCC-MR deformation laws proved ineffective at predicting this interaction. Microscale crystal plasticity simulations proved effective at predicting the trends observed experimentally, hence demonstrating the potential of crystal plasticity as a predictive tool for structural integrity analysis.

Original language	English
Article number	16
Journal	Physical Sciences Forum
Volume	4
Issue number	1
DOIs	https://doi.org/10.3390/psf2022004016
Publication status	Published - 8 Aug 2022
Event	19th International Conference on Experimental Mechanics - Kraków, Poland Duration: 17 Jul 2022 → 21 Jul 2022

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Creep-plasticity interaction in high-temperature reactor materials
Allen, C. (Student), Coules, H. (Principal Investigator) & Truman, C. E. (Principal Investigator)
5/10/20 → 4/10/24
Project: Research

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title = "Investigation into the effects of prior plasticity on creep accumulation in 316H stainless steel",

abstract = "Steel components in the boilers of nuclear reactors are subject to high temperatures and varying loading conditions. This can introduce time-dependent and time-independent plasticity, which can interact with one another. Specimens of 316H austenitic stainless steel were heated to 550 C and tensile pre-strained to 8\%, 11\% and 14\% followed by 200 h, 280 MPa creep tests. These tests showed an increase in creep resistance with increasing tensile pre-strain. Macroscale simulations using RCC-MR deformation laws proved ineffective at predicting this interaction. Microscale crystal plasticity simulations proved effective at predicting the trends observed experimentally, hence demonstrating the potential of crystal plasticity as a predictive tool for structural integrity analysis.",

author = "Chris Allen and Harry Coules and Truman, \{Christopher E\}",

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language = "English",

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T1 - Investigation into the effects of prior plasticity on creep accumulation in 316H stainless steel

AU - Allen, Chris

AU - Coules, Harry

AU - Truman, Christopher E

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N2 - Steel components in the boilers of nuclear reactors are subject to high temperatures and varying loading conditions. This can introduce time-dependent and time-independent plasticity, which can interact with one another. Specimens of 316H austenitic stainless steel were heated to 550 C and tensile pre-strained to 8%, 11% and 14% followed by 200 h, 280 MPa creep tests. These tests showed an increase in creep resistance with increasing tensile pre-strain. Macroscale simulations using RCC-MR deformation laws proved ineffective at predicting this interaction. Microscale crystal plasticity simulations proved effective at predicting the trends observed experimentally, hence demonstrating the potential of crystal plasticity as a predictive tool for structural integrity analysis.

AB - Steel components in the boilers of nuclear reactors are subject to high temperatures and varying loading conditions. This can introduce time-dependent and time-independent plasticity, which can interact with one another. Specimens of 316H austenitic stainless steel were heated to 550 C and tensile pre-strained to 8%, 11% and 14% followed by 200 h, 280 MPa creep tests. These tests showed an increase in creep resistance with increasing tensile pre-strain. Macroscale simulations using RCC-MR deformation laws proved ineffective at predicting this interaction. Microscale crystal plasticity simulations proved effective at predicting the trends observed experimentally, hence demonstrating the potential of crystal plasticity as a predictive tool for structural integrity analysis.

U2 - 10.3390/psf2022004016

DO - 10.3390/psf2022004016

M3 - Article (Academic Journal)

SN - 2673-9984

VL - 4

JO - Physical Sciences Forum

JF - Physical Sciences Forum

IS - 1

M1 - 16

T2 - 19th International Conference on Experimental Mechanics

Y2 - 17 July 2022 through 21 July 2022

ER -

Investigation into the effects of prior plasticity on creep accumulation in 316H stainless steel

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Creep-plasticity interaction in high-temperature reactor materials

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