Autofrettage of weld clad components

G. Benghalia; J. Wood

doi:10.1016/j.proeng.2015.12.239

Autofrettage of weld clad components

G. Benghalia, J. Wood

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Abstract

A fatigue-resistant cladding concept confirms the presence of compressive residual stresses in a cylinder weld clad with 17-4 PH stainless steel while tensile residual stresses exist in an Inconel 625 clad layer. In this study, autofrettage of an Inconel 625 thick-walled clad cylinder is investigated with modified residual stress distributions obtained indicating that tensile residual stresses throughout the clad layer are transformed to compressive in nature, discontinuity stresses at the clad/substrate interface are almost entirely eliminated and compressive residual stresses exist to a depth of around 18mm. Strain hardening effects and the assumption of an idealized interface are discussed.

Original language	English
Pages (from-to)	453-465
Number of pages	13
Journal	Procedia Engineering
Volume	130
Issue number	2015
DOIs	https://doi.org/10.1016/j.proeng.2015.12.239
Publication status	Published - 22 Dec 2015
Event	14th International Conference on Pressure Vessel Technology - ICPVT-14 - Shanghai International Convention Center, Shanghai, China Duration: 23 Sept 2015 → 26 Sept 2015

Keywords

weld cladding
residual stress
autofrettage
finite element analysis

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10.1016/j.proeng.2015.12.239Licence: CC BY-NC-ND 4.0

Benghalia-Wood-PE2015-Autofrettage-of-weld-clad-componentsFinal published version, 0.99 MBLicence: CC BY-NC-ND 4.0

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title = "Autofrettage of weld clad components",

abstract = "A fatigue-resistant cladding concept confirms the presence of compressive residual stresses in a cylinder weld clad with 17-4 PH stainless steel while tensile residual stresses exist in an Inconel 625 clad layer. In this study, autofrettage of an Inconel 625 thick-walled clad cylinder is investigated with modified residual stress distributions obtained indicating that tensile residual stresses throughout the clad layer are transformed to compressive in nature, discontinuity stresses at the clad/substrate interface are almost entirely eliminated and compressive residual stresses exist to a depth of around 18mm. Strain hardening effects and the assumption of an idealized interface are discussed.",

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author = "G. Benghalia and J. Wood",

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language = "English",

volume = "130",

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journal = "Procedia Engineering",

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note = "14th International Conference on Pressure Vessel Technology - ICPVT-14 ; Conference date: 23-09-2015 Through 26-09-2015",

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TY - JOUR

T1 - Autofrettage of weld clad components

AU - Benghalia, G.

AU - Wood, J.

PY - 2015/12/22

Y1 - 2015/12/22

N2 - A fatigue-resistant cladding concept confirms the presence of compressive residual stresses in a cylinder weld clad with 17-4 PH stainless steel while tensile residual stresses exist in an Inconel 625 clad layer. In this study, autofrettage of an Inconel 625 thick-walled clad cylinder is investigated with modified residual stress distributions obtained indicating that tensile residual stresses throughout the clad layer are transformed to compressive in nature, discontinuity stresses at the clad/substrate interface are almost entirely eliminated and compressive residual stresses exist to a depth of around 18mm. Strain hardening effects and the assumption of an idealized interface are discussed.

AB - A fatigue-resistant cladding concept confirms the presence of compressive residual stresses in a cylinder weld clad with 17-4 PH stainless steel while tensile residual stresses exist in an Inconel 625 clad layer. In this study, autofrettage of an Inconel 625 thick-walled clad cylinder is investigated with modified residual stress distributions obtained indicating that tensile residual stresses throughout the clad layer are transformed to compressive in nature, discontinuity stresses at the clad/substrate interface are almost entirely eliminated and compressive residual stresses exist to a depth of around 18mm. Strain hardening effects and the assumption of an idealized interface are discussed.

KW - weld cladding

KW - residual stress

KW - autofrettage

KW - finite element analysis

UR - http://www.icpvt-14.org/

UR - http://www.sciencedirect.com/science/journal/18777058

U2 - 10.1016/j.proeng.2015.12.239

DO - 10.1016/j.proeng.2015.12.239

M3 - Article

SN - 1877-7058

VL - 130

SP - 453

EP - 465

JO - Procedia Engineering

JF - Procedia Engineering

IS - 2015

T2 - 14th International Conference on Pressure Vessel Technology - ICPVT-14

Y2 - 23 September 2015 through 26 September 2015

ER -

Autofrettage of weld clad components

Abstract

Keywords

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Material and residual stress considerations associated with the autofrettage of weld clad components

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