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dc.contributor.author
Pandya, Kedar Sanjay
dc.contributor.author
Roth, Christian C.
dc.contributor.author
Mohr, Dirk
dc.date.accessioned
2020-02-13T09:06:53Z
dc.date.available
2020-02-02T14:09:53Z
dc.date.available
2020-02-13T09:06:53Z
dc.date.issued
2019
dc.identifier.issn
1757-8981
dc.identifier.issn
1757-899X
dc.identifier.other
10.1088/1757-899X/651/1/012100
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/396500
dc.identifier.doi
10.3929/ethz-b-000396500
dc.description.abstract
High strength 7xxx series aluminum alloys are being increasingly considered for automotive applications due to their superior specific strength compared to 6xxx series alloys. Complex structural components made from 7xxx series alloys need to be manufactured through warm forming or hot stamping due to their low ductility at room temperature. For hot stamping, the AA7075 blanks are heat treated to above 480°C, yielding a supersaturated solid solution, corresponding to a W temper state. The preheated blanks are then simultaneously formed and rapidly quenched using cooled dies. The entire forming process takes place in the W temper condition. The stamped parts are further subject to an artificial aging heat treatment to achieve the desired temper through precipitation hardening. Therefore, understanding the strain rate and temperature dependent plasticity behavior of AA7075-W is critical to establish optimum design parameters for the hot stamping process. The present work is concerned with the strain rate and temperature dependent plastic response of AA7075 in the W temper state. In particular, the results from a comprehensive experimental program on uniaxial tension specimens are presented. High temperature experiments are carried out at strain rates ranging from 0.001-2/s in a universal testing machine. An induction heating system with infrared high speed imaging is used to span the entire temperature range from 180°C to 480°C, over the full range of strain rates considered. Based on the experimental results, a candidate plasticity model with an empirical mixed Swift-Voce hardening law and a Johnson-Cook type strain rate and temperature dependence is calibrated.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
IOP Publishing
dc.rights.uri
http://creativecommons.org/licenses/by/3.0/
dc.title
Strain Rate and Temperature Dependent Plastic Response of AA7075 during Hot Forming
en_US
dc.type
Conference Paper
dc.rights.license
Creative Commons Attribution 3.0 Unported
dc.date.published
2019-11-26
ethz.journal.title
IOP Conference Series: Materials Science and Engineering
ethz.journal.volume
651
en_US
ethz.journal.issue
1
en_US
ethz.pages.start
012100
en_US
ethz.size
9 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.event
38th International Deep Drawing Research Group Annual Conference (IDDRG 2019)
ethz.event.location
Enschede, Netherlands
ethz.event.date
June 3-7, 2019
ethz.identifier.scopus
ethz.publication.place
London
ethz.publication.status
published
en_US
ethz.date.deposited
2020-02-02T14:10:09Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2020-02-13T09:07:11Z
ethz.rosetta.lastUpdated
2024-02-02T10:23:25Z
ethz.rosetta.versionExported
true
ethz.COinS
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