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Fatigue life enhancement of additive manufactured 316l stainless steel by LSP using a DPSS laser system

SYSNO ASEP	0558979
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Fatigue life enhancement of additive manufactured 316l stainless steel by LSP using a DPSS laser system
Author(s)	Zulic, Sanin (FZU-D) Rostohar, Danijela (FZU-D)_ORCID Kaufman, Jan (FZU-D)_ORCID Pathak, Sunil (FZU-D)_{ORCID, RID} Kopeček, Jaromír (FZU-D)_{RID, ORCID} Böhm, Marek (FZU-D)_ORCID Brajer, Jan (FZU-D)_ORCID Mocek, Tomáš (FZU-D)_{RID, ORCID, SAI}
Number of authors	8
Source Title	Surface Engineering. - : Taylor & Francis - ISSN 0267-0844 Roč. 38, č. 2 (2022), s. 183-190
Number of pages	8 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	laser shock peening ; residual stress ; fatigue ; DPSS ; additive manufacturing ; SLM ; SEM ; EBSD
Subject RIV	BH - Optics, Masers, Lasers
OECD category	Optics (including laser optics and quantum optics)
R&D Projects	EF15_006/0000674 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
	EF20_079/0017754 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Method of publishing	Open access
Institutional support	FZU-D - RVO:68378271
UT WOS	000782356600001
EID SCOPUS	85129178163
DOI	10.1080/02670844.2022.2060463
Annotation	Present work aims to study the fatigue life behaviour of additively manufactured (AM) stainless steel 316L in a laser shock peening (LSP) process. The fatigue behaviour of as-built samples and LSPeened sample were studied on the AM samples. A new diode-pumped laser system was utilized as an instrument to perform LSP operations. LSP operation was performed under two different sacrificial layers of different materials i.e. vinyl tape and aluminium tape. The other essential LSP parameters, namely energy, pulse width, spot size, overlap, and number of layers were kept constant based on the previous experimental findings. The characterization was done for analyzing the residual stresses using a hole drilling process, and a 4-point bending machine. A considerable improvement in compressive residual stress and fatigue life was observed in the LSPeened samples. Such improvements in residual stresses and fatigue life may pave a road to establishing diode-pumped lasers for LSP applications.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2023
Electronic address	https://hdl.handle.net/11104/0333053

Number of the records: 1