Constitutive equations that describe creep stress relaxation for 316H stainless steel at 550 degrees C

Bo Chen; David J. Smith; Peter E. J. Flewitt; Michael W. Spindler; David J Smith

doi:10.3184/096034011X13119593388654

Constitutive equations that describe creep stress relaxation for 316H stainless steel at 550 degrees C

Bo Chen^*, David J. Smith, Peter E. J. Flewitt, Michael W. Spindler, David J Smith

^*Corresponding author for this work

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

16 Citations (Scopus)

Abstract

The prediction of the stress relaxation behaviour of welding induced residual stresses in thick section 316H austenitic stainless steel welded component provides an input for quantifying reheat crack initiation observed in the heat affected zone. The cracks occur after service at a temperature range from 490 to 520 degrees C. The present work reviews some of the widely applied stress relaxation models. The relative strengths and weaknesses of these existing models are discussed. An improved constitutive equation derived from a forward uniaxial creep deformation law is proposed. The relative importance of the parameters selected in the new constitutive model, when compared with experimental data, is discussed. The importance of a better understanding of the role of the internal stress and its measurement is highlighted.

Original language	English
Pages (from-to)	155-164
Number of pages	10
Journal	Materials at High Temperatures
Volume	28
Issue number	3
DOIs	https://doi.org/10.3184/096034011X13119593388654
Publication status	Published - Sept 2011

Keywords

stress relaxation
CELL
316H austenitic stainless steel
internal stress
creep deformation
DEFORMATION
constitutive equations
primary creep
METAL CRYSTALS
RANGE INTERNAL-STRESSES

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@article{49b2afd49e514ebd8c1f4fc8f9c4c818,

title = "Constitutive equations that describe creep stress relaxation for 316H stainless steel at 550 degrees C",

abstract = "The prediction of the stress relaxation behaviour of welding induced residual stresses in thick section 316H austenitic stainless steel welded component provides an input for quantifying reheat crack initiation observed in the heat affected zone. The cracks occur after service at a temperature range from 490 to 520 degrees C. The present work reviews some of the widely applied stress relaxation models. The relative strengths and weaknesses of these existing models are discussed. An improved constitutive equation derived from a forward uniaxial creep deformation law is proposed. The relative importance of the parameters selected in the new constitutive model, when compared with experimental data, is discussed. The importance of a better understanding of the role of the internal stress and its measurement is highlighted.",

keywords = "stress relaxation, CELL, 316H austenitic stainless steel, internal stress, creep deformation, DEFORMATION, constitutive equations, primary creep, METAL CRYSTALS, RANGE INTERNAL-STRESSES",

author = "Bo Chen and Smith, {David J.} and Flewitt, {Peter E. J.} and Spindler, {Michael W.} and Smith, {David J}",

year = "2011",

month = sep,

doi = "10.3184/096034011X13119593388654",

language = "English",

volume = "28",

pages = "155--164",

journal = "Materials at High Temperatures",

issn = "0960-3409",

publisher = "Taylor & Francis Group",

number = "3",

}

TY - JOUR

T1 - Constitutive equations that describe creep stress relaxation for 316H stainless steel at 550 degrees C

AU - Chen, Bo

AU - Smith, David J.

AU - Flewitt, Peter E. J.

AU - Spindler, Michael W.

AU - Smith, David J

PY - 2011/9

Y1 - 2011/9

N2 - The prediction of the stress relaxation behaviour of welding induced residual stresses in thick section 316H austenitic stainless steel welded component provides an input for quantifying reheat crack initiation observed in the heat affected zone. The cracks occur after service at a temperature range from 490 to 520 degrees C. The present work reviews some of the widely applied stress relaxation models. The relative strengths and weaknesses of these existing models are discussed. An improved constitutive equation derived from a forward uniaxial creep deformation law is proposed. The relative importance of the parameters selected in the new constitutive model, when compared with experimental data, is discussed. The importance of a better understanding of the role of the internal stress and its measurement is highlighted.

AB - The prediction of the stress relaxation behaviour of welding induced residual stresses in thick section 316H austenitic stainless steel welded component provides an input for quantifying reheat crack initiation observed in the heat affected zone. The cracks occur after service at a temperature range from 490 to 520 degrees C. The present work reviews some of the widely applied stress relaxation models. The relative strengths and weaknesses of these existing models are discussed. An improved constitutive equation derived from a forward uniaxial creep deformation law is proposed. The relative importance of the parameters selected in the new constitutive model, when compared with experimental data, is discussed. The importance of a better understanding of the role of the internal stress and its measurement is highlighted.

KW - stress relaxation

KW - CELL

KW - 316H austenitic stainless steel

KW - internal stress

KW - creep deformation

KW - DEFORMATION

KW - constitutive equations

KW - primary creep

KW - METAL CRYSTALS

KW - RANGE INTERNAL-STRESSES

U2 - 10.3184/096034011X13119593388654

DO - 10.3184/096034011X13119593388654

M3 - Article (Academic Journal)

SN - 0960-3409

VL - 28

SP - 155

EP - 164

JO - Materials at High Temperatures

JF - Materials at High Temperatures

IS - 3

ER -

Constitutive equations that describe creep stress relaxation for 316H stainless steel at 550 degrees C

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