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Shape Memory
Technology SFB 459
Special Research Center funded by German Research
Foundation  |
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| General information on project C10 |
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| Subject: |
| Near net shape manufacturing of complex
SMA-parts via selective laser melting |
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| Field of investigation: |
| Materials science, Metallurgy |
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| Principal Investigators: |
| Prof. Dr.-Ing. Horst Meier |
| Telefon: (0234) 32-26310 |
| Telefax: (0234) 32-14157 |
| email: meier@lps.rub.de
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web:
http://www.lps.ruhr-uni-bochum.de
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| Address: |
Ruhr-Universität Bochum
Fakultät für Maschinenbau
Institute Product and Service Engineering
Lehrstuhl für Produktionssysteme
Universitätsstr. 150
44780 Bochum |
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| Dr.-Ing. Jan Frenzel |
| Telephone: +49(0234) 32-24024 |
| FAX: +49(0234) 32-14235 |
| email: jan.frenzel@ruhr-uni-bochum.de
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| web: http://www.ruhr-uni-bochum.de/ww
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| Address: |
Ruhr-Universität Bochum
Fakultät für Maschinenbau
Institut für Werkstoffe (IfW)
Lehrstuhl Werkstoffwissenschaft
Universitätsstr. 150
44780 Bochum |
| Summary/Abstract |
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Project C10 focuses on the near-net-shape manufacturing
of complex shape memory parts via Selective Laser
Melting (SLM). This innovative rapid freeform technology
enables a direct production of parts or components from
a powder material. Due to the additive principle of this
technology high complex three dimensional parts or
filigree structures can be generated, which hardly can
be manufactured by conventional processing technologies.
Particularly regarding to the difficult machinability of
ternary shape memory alloys SLM is a promising
processing route. Initially the new subproject C10
gathers scientific fundamentals for the treatment of
shape memory alloys using this laser based freeform
technology. Substantially binary NiTi-SMAs are observed;
in addition ternary alloys (NiTiHf, NiTiZr, NiTiCu) are
investigated. Those ascertained basics are utilized for
the production of filigree parts e.g. for absorbers or
actuators. The project identifies interrelations of
processing parameters and resultant properties of SMAs
fabricated via SLM. Individually optimized process
strategies as to the parts’ geometries and orientations,
scanning tactics etc. are implemented. Detailed material
analyses characterize the microstructures evolving from
the laser treatment. Therefore the porosity, secondary
phases and residual stresses are studied. Functional and
structural performances of the generated shape memory
material are investigated. Those studies shall
contribute to identify requirements and restrictions for
the optimization of the entire process control and
strategy. |
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