elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Residual stress analysis of butt welds made of additive an tradionally manufactured 316L stainless steel plates

Schubnell, Jan and Sarmast, Ardeshir and Altenhöner, Felix and Sheikhi, Shahram and Braun, Moritz and Ehlers, Sören (2022) Residual stress analysis of butt welds made of additive an tradionally manufactured 316L stainless steel plates. In: 11th International Conference on Residual Stresses. ICRS11 – 11th International Conference on Residual Stresses, 2022-03-27 - 2022-03-30, Nancy, Frankreich.

[img] PDF - Only accessible within DLR
722kB

Abstract

Due to the limited building volume of powder bed additive manufactured (AM) methods, combining several AM parts for a larger part through a welding joint may be required. Through AM processes, Laser powder bed fusion (LPBF) has a great potential because it enables the production of nearly fulldensity components. But the residual stresses are still an issue in the wide application of this method. In this study residual stress analysis of butt joints made of 316L AM steel plates compared to conventional rolled steel plates were performed by X-ray diffraction with two different analysis methods: The commonly used sin² psi-method and the comparably new cos alpha-method. Complex residual stress states were determined at the welds made of AM steel plates compared to the welds made of conventional steel plates. High tensile residual stresses were determined in the AM plates depending on the layer orientation, but high compressive residual stresses were measured in the rolled steel plates. However, the residual stress level in the heat affected zone (HAZ) of the weld was comparably low in the AM steel plates and similar to the welds made of rolled steel plates. The residual stress analysis with the cos alpha-method showed the advantage of the comparable short measurement time based on small radiation time compared to the conventional sin² psi-method. A high influence of the layer orientation and manufacturing process was determined on the residual stress state at the base material. Close to the weld, relatively small differences in residual stress state between the investigated conditions were measured by both methods.

Item URL in elib:https://elib.dlr.de/185418/
Document Type:Conference or Workshop Item (Speech)
Title:Residual stress analysis of butt welds made of additive an tradionally manufactured 316L stainless steel plates
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Schubnell, JanFraunhofer Institute for Mechanics of MaterialsUNSPECIFIEDUNSPECIFIED
Sarmast, ArdeshirFraunhofer Institute for Mechanics of MaterialsUNSPECIFIEDUNSPECIFIED
Altenhöner, FelixUniversity of Applied Science Hamburg, Institute of Materials Science and Joining TechnologyUNSPECIFIEDUNSPECIFIED
Sheikhi, ShahramUniversity of Applied Science Hamburg, Institute of Materials Science and Joining TechnologyUNSPECIFIEDUNSPECIFIED
Braun, MoritzHamburg University of Technology, Institute of Ship Structural Design and AnalysisUNSPECIFIEDUNSPECIFIED
Ehlers, SörenUNSPECIFIEDhttps://orcid.org/0000-0001-5698-9354UNSPECIFIED
Date:27 March 2022
Journal or Publication Title:11th International Conference on Residual Stresses
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Residual stress, Additive Manufacturing, Gas metal arc welding, cos alpha-method, sin²psi-method
Event Title:ICRS11 – 11th International Conference on Residual Stresses
Event Location:Nancy, Frankreich
Event Type:international Conference
Event Start Date:27 March 2022
Event End Date:30 March 2022
HGF - Research field:Energy
HGF - Program:other
HGF - Program Themes:E - no assignment
DLR - Research area:Energy
DLR - Program:E - no assignment
DLR - Research theme (Project):E - no assignment
Location: Geesthacht
Institutes and Institutions:Institute of Maritime Energy Systems
Deposited By: Ortner, Dr.rer.nat. Jürgen
Deposited On:20 Apr 2022 09:25
Last Modified:24 Apr 2024 20:46

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Website and database design: Copyright © German Aerospace Center (DLR). All rights reserved.