Datum
2021-03-24Schlagwort
620 Ingenieurwissenschaften LaserschweißenMechanische EigenschaftRissbildungMikrostrukturMetadata
Zur Langanzeige
Aufsatz
Laser welding of grey cast iron with spheroidal graphite-influence of process parameters on crack formationand hardness
Zusammenfassung
In the investigation at hand, sheets of ferritic and pearlitic grey cast iron with spheroidalgraphite are welded using a fiber-laser. The influence of varying laser power and welding speed onthe macroscopic characteristics of the weld seam and crack formation are analyzed and discussed.Substantial crack formation with crack densities of up to2.93 cm−1are found. Furthermore, hardnessmeasurements are conducted to evaluate the formation of brittle phases within the weld metaland heat-affected zone. Peak hardness values of up to 860 HV0.3 and 975 HV0.3 are identified inEN-GJS-400-15 and EN-GJS-700-2, respectively. Subsequently, a proposition on the dependence ofcrack formation on weld seam width is given. Furthermore, the influence of nickel-containing fillermaterial on the microstructure, crack formation and hardness is studied. It can be derived from theresults that laser-beam welding of grey cast iron with spheroidal graphite requires further research inorder to achieve crack-free weld seams and hinder the formation of undesirable, brittle phases.
Zitierform
In: Metals Volume 11 / Issue 4 (2021-03-24) EISSN 2075-4701Förderhinweis
Gefördert durch den Publikationsfonds der Universität KasselZitieren
@article{doi:10.17170/kobra-202104193703,
author={Sommer, Niklas and Lehto, John Michael and Völkers, Stefan and Böhm, Stefan},
title={Laser welding of grey cast iron with spheroidal graphite-influence of process parameters on crack formationand hardness},
journal={Metals},
year={2021}
}
0500 Oax 0501 Text $btxt$2rdacontent 0502 Computermedien $bc$2rdacarrier 1100 2021$n2021 1500 1/eng 2050 ##0##http://hdl.handle.net/123456789/12722 3000 Sommer, Niklas 3010 Lehto, John Michael 3010 Völkers, Stefan 3010 Böhm, Stefan 4000 Laser welding of grey cast iron with spheroidal graphite-influence of process parameters on crack formationand hardness / Sommer, Niklas 4030 4060 Online-Ressource 4085 ##0##=u http://nbn-resolving.de/http://hdl.handle.net/123456789/12722=x R 4204 \$dAufsatz 4170 5550 {{Laserschweißen}} 5550 {{Mechanische Eigenschaft}} 5550 {{Rissbildung}} 5550 {{Mikrostruktur}} 7136 ##0##http://hdl.handle.net/123456789/12722
2021-04-19T09:18:50Z 2021-04-19T09:18:50Z 2021-03-24 doi:10.17170/kobra-202104193703 http://hdl.handle.net/123456789/12722 Gefördert durch den Publikationsfonds der Universität Kassel eng Namensnennung 4.0 International http://creativecommons.org/licenses/by/4.0/ laser welding cast iron spheroidal graphite spheroidal graphite cast iron nodular castiron microstructure microstructural evolution mechanical properties crack formation cold cracking 620 Laser welding of grey cast iron with spheroidal graphite-influence of process parameters on crack formationand hardness Aufsatz In the investigation at hand, sheets of ferritic and pearlitic grey cast iron with spheroidalgraphite are welded using a fiber-laser. The influence of varying laser power and welding speed onthe macroscopic characteristics of the weld seam and crack formation are analyzed and discussed.Substantial crack formation with crack densities of up to2.93 cm−1are found. Furthermore, hardnessmeasurements are conducted to evaluate the formation of brittle phases within the weld metaland heat-affected zone. Peak hardness values of up to 860 HV0.3 and 975 HV0.3 are identified inEN-GJS-400-15 and EN-GJS-700-2, respectively. Subsequently, a proposition on the dependence ofcrack formation on weld seam width is given. Furthermore, the influence of nickel-containing fillermaterial on the microstructure, crack formation and hardness is studied. It can be derived from theresults that laser-beam welding of grey cast iron with spheroidal graphite requires further research inorder to achieve crack-free weld seams and hinder the formation of undesirable, brittle phases. open access Sommer, Niklas Lehto, John Michael Völkers, Stefan Böhm, Stefan doi:10.3390/met11040532 Laserschweißen Mechanische Eigenschaft Rissbildung Mikrostruktur publishedVersion EISSN 2075-4701 Issue 4 Metals Volume 11 false 532
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