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Correlation between porosity and processing parameters in TiAl6V4 produced by selective laser melting

Kasperovich, Galina and Haubrich, Jan and Gussone, Joachim and Requena, Guillermo (2016) Correlation between porosity and processing parameters in TiAl6V4 produced by selective laser melting. Materials and Design (105), pp. 160-170. Elsevier. DOI: http://dx.doi.org/10.1016/j.matdes.2016.05.070 ISSN 0264-1275

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Official URL: http://dx.doi.org/10.1016/j.matdes.2016.05.070

Abstract

This study presents the correlation between process parameters and porosity formation in a TiAl6V4 alloy produced by selective laser melting. The porosity is investigated by 2D and 3D methods aiming to identify the mechanisms of void formation, their morphology as well as volume fraction as a function of the energy density. An evident minimumvolume fraction is observed between process parameters with significant overheating and insufficient fusion. It is shown that these two marginal regions define two mechanisms of void formation. Two dominant types of voids morphology are identified and examined regarding pore orientation versus their elongation, which together with the curvature distribution analysis allow revealing critical defects.

Item URL in elib:https://elib.dlr.de/107505/
Document Type:Article
Title:Correlation between porosity and processing parameters in TiAl6V4 produced by selective laser melting
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kasperovich, Galinagalina.kasperovich (at) dlr.deUNSPECIFIED
Haubrich, Janjan.haubrich (at) dlr.deUNSPECIFIED
Gussone, Joachimjoachim.gussone (at) dlr.deUNSPECIFIED
Requena, Guillermoguillermo.requena (at) dlr.deUNSPECIFIED
Date:June 2016
Journal or Publication Title:Materials and Design
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :http://dx.doi.org/10.1016/j.matdes.2016.05.070
Page Range:pp. 160-170
Publisher:Elsevier
ISSN:0264-1275
Status:Published
Keywords:Selective laser melting, Titanium alloys, Porosity morphology, Synchrotron tomography
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Laser Research and Technology
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Metallic Structures and Hybrid Material Systems
Deposited By: Kasperovich, Dr.-Ing. Galina
Deposited On:25 Nov 2016 10:28
Last Modified:31 May 2019 05:01

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