Experimental investigation of the behavior and the low cycle fatigue life of a welded structure

A. Benoit; L. Rémy; A. Köster; H. Maitournam; F. Oger

doi:10.1016/j.msea.2013.11.082

Experimental investigation of the behavior and the low cycle fatigue life of a welded structure

A. Benoit
, L. Rémy
, A. Köster
, H. Maitournam
, F. Oger

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

Abstract

Strain controlled low cycle fatigue tests are performed at 300. °C under tension compression on an 18%Cr ferritic stainless steel using base metal and welded specimens. Changes in the microstructure and geometry of the weld bead have a negative impact on the specimens' lifetime. Digital image correlation is used to get information on strain gradient in specimens. Potential drop measurements as metallographic observations are used to monitor micro-cracking. The significance of the results is discussed using finite element computations of welded specimens and observations of fracture surfaces. A tentative rationale is proposed using an energy based micro-crack growth model.

Original language	English
Pages (from-to)	64-76
Number of pages	13
Journal	Materials Science and Engineering: A
Volume	595
DOIs	https://doi.org/10.1016/j.msea.2013.11.082
Publication status	Published - 10 Feb 2014
Externally published	Yes

Keywords

Ferritic stainless steel
Lifetime model
Low cycle fatigue
Welded structure

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10.1016/j.msea.2013.11.082

Cite this

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title = "Experimental investigation of the behavior and the low cycle fatigue life of a welded structure",

abstract = "Strain controlled low cycle fatigue tests are performed at 300. °C under tension compression on an 18\%Cr ferritic stainless steel using base metal and welded specimens. Changes in the microstructure and geometry of the weld bead have a negative impact on the specimens' lifetime. Digital image correlation is used to get information on strain gradient in specimens. Potential drop measurements as metallographic observations are used to monitor micro-cracking. The significance of the results is discussed using finite element computations of welded specimens and observations of fracture surfaces. A tentative rationale is proposed using an energy based micro-crack growth model.",

keywords = "Ferritic stainless steel, Lifetime model, Low cycle fatigue, Welded structure",

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T1 - Experimental investigation of the behavior and the low cycle fatigue life of a welded structure

AU - Benoit, A.

AU - Rémy, L.

AU - Köster, A.

AU - Maitournam, H.

AU - Oger, F.

PY - 2014/2/10

Y1 - 2014/2/10

N2 - Strain controlled low cycle fatigue tests are performed at 300. °C under tension compression on an 18%Cr ferritic stainless steel using base metal and welded specimens. Changes in the microstructure and geometry of the weld bead have a negative impact on the specimens' lifetime. Digital image correlation is used to get information on strain gradient in specimens. Potential drop measurements as metallographic observations are used to monitor micro-cracking. The significance of the results is discussed using finite element computations of welded specimens and observations of fracture surfaces. A tentative rationale is proposed using an energy based micro-crack growth model.

AB - Strain controlled low cycle fatigue tests are performed at 300. °C under tension compression on an 18%Cr ferritic stainless steel using base metal and welded specimens. Changes in the microstructure and geometry of the weld bead have a negative impact on the specimens' lifetime. Digital image correlation is used to get information on strain gradient in specimens. Potential drop measurements as metallographic observations are used to monitor micro-cracking. The significance of the results is discussed using finite element computations of welded specimens and observations of fracture surfaces. A tentative rationale is proposed using an energy based micro-crack growth model.

KW - Ferritic stainless steel

KW - Lifetime model

KW - Low cycle fatigue

KW - Welded structure

UR - https://www.scopus.com/pages/publications/84890610560

U2 - 10.1016/j.msea.2013.11.082

DO - 10.1016/j.msea.2013.11.082

M3 - Article

AN - SCOPUS:84890610560

SN - 0921-5093

VL - 595

SP - 64

EP - 76

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

ER -

Experimental investigation of the behavior and the low cycle fatigue life of a welded structure

Abstract

Keywords

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