Investigation of residual stresses in high-cycle loaded laser steel welds

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F19%3A00335788" target="_blank" >RIV/68407700:21340/19:00335788 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/25797000:_____/19:N0000055

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Investigation of residual stresses in high-cycle loaded laser steel welds

Popis výsledku v původním jazyce

The paper contains results of a comprehensive experimental programme aimed at an evaluation of residual stresses in and near laser welds of pressure vessels steels using X-ray diffraction technique. Generally, the manufacturing processes of a machine component introduce residual stresses that have an important and may have even essential influence on their behaviour during service life. The goal of this contribution was to find the influence of high-cycle loading on the stresses´ relaxation in and near the welds. It has been found that the surface residual stress state is not the most important factor, either positive or negative, but the fatigue life more or less depends on the specific situation and condition of the materials and welds. On the other hand, the fatigue loading test caused the reduction of microdeformation values. The analysis of microstructure changes by X-ray diffraction could be an indicator of the future cracks initialization and their propagation.

Název v anglickém jazyce

Investigation of residual stresses in high-cycle loaded laser steel welds

Popis výsledku anglicky

The paper contains results of a comprehensive experimental programme aimed at an evaluation of residual stresses in and near laser welds of pressure vessels steels using X-ray diffraction technique. Generally, the manufacturing processes of a machine component introduce residual stresses that have an important and may have even essential influence on their behaviour during service life. The goal of this contribution was to find the influence of high-cycle loading on the stresses´ relaxation in and near the welds. It has been found that the surface residual stress state is not the most important factor, either positive or negative, but the fatigue life more or less depends on the specific situation and condition of the materials and welds. On the other hand, the fatigue loading test caused the reduction of microdeformation values. The analysis of microstructure changes by X-ray diffraction could be an indicator of the future cracks initialization and their propagation.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Projekt

<a href="/cs/project/TH02010664" target="_blank" >TH02010664: Inovativní metody svařování vysokotlakých zařízení s využitím laserových technologií</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

EAN 2019 57th conference on experimental stress analysis CONFERENCE PROCEEDINGS

ISBN

9788021457669

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

24-29

Název nakladatele

Česká společnost pro mechaniku

Místo vydání

Praha

Místo konání akce

Luhačovice

Datum konání akce

3. 6. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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