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dc.contributor.author
Wiessner, Moritz
dc.contributor.author
Martendal, Caroline P.
dc.contributor.author
Borges Esteves, Paulo M.
dc.contributor.author
Kunze, Karsten
dc.contributor.author
Wegener, Konrad
dc.date.accessioned
2020-03-30T06:29:53Z
dc.date.available
2020-03-27T15:08:44Z
dc.date.available
2020-03-30T06:29:53Z
dc.date.issued
2019-10-23
dc.identifier.uri
http://hdl.handle.net/20.500.11850/407033
dc.identifier.doi
10.3929/ethz-b-000407033
dc.description.abstract
The comprehension of the metallurgical transformations of the workpiece can contribute with valuable data for simulation models and for a better understanding of surface creation in electrical discharge machining (EDM). This is necessary to improve the process in the scope of zero defect manufacturing. This work aims to investigate the influence of EDM on the often used but difficult to machine alloy Ti-6Al-4V. Single and multiple sparks in oil are performed and subsequently analyzed with advanced electron microscopy methods and optical high-speed emission spectroscopy. The microscopic analysis of recast layer and heat affected zones in addition to the plasma analyses provides deep insight into the process and contributes with new information about EDM. Results showed that, with the employed machining conditions, phase transformations occur at the surface of the material. Also, a superficial carbide layer was observed exclusively during multi sparks experiments. The performed analyses of metallurgical and topographic aspects of EDM describe its surface integrity, i.e., the condition of a surface generated by this manufacturing process. The emission spectroscopy analysis shows that the erosion plasma consists mostly of the dielectric elements with a high amount of hydrogen, which comes from the breaking of the dielectric hydro-carbon chains. This spectrum suggests the plasma takes part in the formation of the carbide layer.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.rights.uri
http://rightsstatements.org/page/InC-NC/1.0/
dc.subject
Surface Integrity
en_US
dc.subject
EDM
en_US
dc.subject
Phase Transformation
en_US
dc.subject
Heat-affected Zones
en_US
dc.subject
Optical Emission Spectroscopy
en_US
dc.title
ANALYSIS OF ERODED TI-6AL-4V SINGLE CRATERS AND SURFACES IN OIL BY ELECTRON MICROSCOPY AND OPTICAL EMISSON SPECTROSCOPY
en_US
dc.type
Conference Paper
dc.rights.license
In Copyright - Non-Commercial Use Permitted
ethz.size
6 p.
en_US
ethz.version.deposit
acceptedVersion
en_US
ethz.event
25th ABCM International Congress of Mechanical Engineering (COBEM 2019)
en_US
ethz.event.location
Uberlândia, MG, Brazil
en_US
ethz.event.date
October 20-25, 2019
en_US
ethz.notes
Conference lecture held on October 23, 2019
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02130 - Dep. Maschinenbau und Verfahrenstechnik / Dep. of Mechanical and Process Eng.::02623 - Inst. f. Werkzeugmaschinen und Fertigung / Inst. Machine Tools and Manufacturing
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00003 - Schulleitung und Dienste::00022 - Bereich VP Forschung / Domain VP Research::02891 - ScopeM / ScopeM
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00003 - Schulleitung und Dienste::00022 - Bereich VP Forschung / Domain VP Research::02891 - ScopeM / ScopeM
ethz.date.deposited
2020-03-27T15:08:54Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2020-03-30T06:30:03Z
ethz.rosetta.lastUpdated
2022-03-29T01:39:56Z
ethz.rosetta.versionExported
true
ethz.COinS
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