Effect of Laser Shock Peening on fatigue properties of additively manufactured AlSi10Mg

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00638045" target="_blank" >RIV/68378271:_____/25:00638045 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21220/25:00384373

Výsledek na webu

<a href="https://doi.org/10.1016/j.ijfatigue.2025.109149" target="_blank" >https://doi.org/10.1016/j.ijfatigue.2025.109149</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ijfatigue.2025.109149" target="_blank" >10.1016/j.ijfatigue.2025.109149</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of Laser Shock Peening on fatigue properties of additively manufactured AlSi10Mg

Popis výsledku v původním jazyce

This study investigates the fatigue strength characteristics of AlSi10Mg specimens produced by Laser Powder Bed Fusion (L-PBF) and heat-treated at 200 ◦C for 2 h. A particular focus of this paper is on evaluating the potential of Laser Shock Peening (LSP) to enhance their fatigue performance. The hourglass specimens were printed in a single batch, resulting in six distinct groups for testing. While three series remained in the as-built state, the other three underwent machining to achieve specific dimensions and surface roughness. Additionally, two variants of the Laser Shock Peening process were applied to two groups of as-built specimens and to two groups of machined specimens. Fatigue testing was performed using a resonant pulsator at the load ratio of R = 0.1. The surface roughness and depth profiles of residual stress were analyzed. A specific focus was set to identify the pore closure due to applied LSP showing that the chosen LSP configurations significantly modify the porosity of additively manufactured AlSi10Mg samples. The results show that the more energy-intensive LSP process improves the fatigue behavior to a point where the difference in fatigue life between machined and as-built specimens becomes minor.

Název v anglickém jazyce

Effect of Laser Shock Peening on fatigue properties of additively manufactured AlSi10Mg

Popis výsledku anglicky

This study investigates the fatigue strength characteristics of AlSi10Mg specimens produced by Laser Powder Bed Fusion (L-PBF) and heat-treated at 200 ◦C for 2 h. A particular focus of this paper is on evaluating the potential of Laser Shock Peening (LSP) to enhance their fatigue performance. The hourglass specimens were printed in a single batch, resulting in six distinct groups for testing. While three series remained in the as-built state, the other three underwent machining to achieve specific dimensions and surface roughness. Additionally, two variants of the Laser Shock Peening process were applied to two groups of as-built specimens and to two groups of machined specimens. Fatigue testing was performed using a resonant pulsator at the load ratio of R = 0.1. The surface roughness and depth profiles of residual stress were analyzed. A specific focus was set to identify the pore closure due to applied LSP showing that the chosen LSP configurations significantly modify the porosity of additively manufactured AlSi10Mg samples. The results show that the more energy-intensive LSP process improves the fatigue behavior to a point where the difference in fatigue life between machined and as-built specimens becomes minor.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

International Journal of Fatigue

ISSN

0142-1123

e-ISSN

1879-3452

Svazek periodika

201

Číslo periodika v rámci svazku

Dec

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

15

Strana od-do

109149

Kód UT WoS článku

001536545400001

EID výsledku v databázi Scopus

2-s2.0-105009928707