Details
| Original language | English |
|---|---|
| Pages (from-to) | 1558-1564 |
| Number of pages | 7 |
| Journal | Journal of Materials Processing Technology |
| Volume | 213 |
| Issue number | 9 |
| Publication status | Published - 21 Mar 2013 |
| Externally published | Yes |
Abstract
In order to meet the demand for optimized light-weight parts, the development of load adapted structures has begun to play a key role in today's research. Promising candidates are complex cellular structures, which can be adapted to the loading conditions by use of Additive Manufacturing techniques. The current study addresses the mechanical behavior of open cellular structures produced by Selective Laser Melting. Samples of Ti-6Al-4V were processed, heat-treated and tested under monotonic and cyclic loading applying both uniaxial and bending loads. To reveal microstructure - mechanical property - relationships an in situ approach using electron back scatter diffraction and digital image correlation was applied. The results clarify the impact of a post-SLM heat treatment on the mechanical performance of cellular structures made from Ti-6Al-4V. Local strains determined by DIC reveal structure weaknesses already at low degrees of deformation and at an early stage of lifetime. The in situ approach helps in understanding the mechanical behavior and allows for local adaptation of the cell design in order to obtain improved load adapted structures.
Keywords
- Additive manufacturing (AM), Cellular structures, Digital image correlation (DIC), Microstructure, Selective laser melting (SLM)
ASJC Scopus subject areas
- Materials Science(all)
- Ceramics and Composites
- Computer Science(all)
- Computer Science Applications
- Materials Science(all)
- Metals and Alloys
- Engineering(all)
- Industrial and Manufacturing Engineering
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In: Journal of Materials Processing Technology, Vol. 213, No. 9, 21.03.2013, p. 1558-1564.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Additively manufactured cellular structures
T2 - Impact of microstructure and local strains on the monotonic and cyclic behavior under uniaxial and bending load
AU - Brenne, F.
AU - Niendorf, T.
AU - Maier, H. J.
N1 - Funding information: The authors would like to thank the Federal State of North Rhine-Westphalia and the industrial partners within the DMRC for financial support.
PY - 2013/3/21
Y1 - 2013/3/21
N2 - In order to meet the demand for optimized light-weight parts, the development of load adapted structures has begun to play a key role in today's research. Promising candidates are complex cellular structures, which can be adapted to the loading conditions by use of Additive Manufacturing techniques. The current study addresses the mechanical behavior of open cellular structures produced by Selective Laser Melting. Samples of Ti-6Al-4V were processed, heat-treated and tested under monotonic and cyclic loading applying both uniaxial and bending loads. To reveal microstructure - mechanical property - relationships an in situ approach using electron back scatter diffraction and digital image correlation was applied. The results clarify the impact of a post-SLM heat treatment on the mechanical performance of cellular structures made from Ti-6Al-4V. Local strains determined by DIC reveal structure weaknesses already at low degrees of deformation and at an early stage of lifetime. The in situ approach helps in understanding the mechanical behavior and allows for local adaptation of the cell design in order to obtain improved load adapted structures.
AB - In order to meet the demand for optimized light-weight parts, the development of load adapted structures has begun to play a key role in today's research. Promising candidates are complex cellular structures, which can be adapted to the loading conditions by use of Additive Manufacturing techniques. The current study addresses the mechanical behavior of open cellular structures produced by Selective Laser Melting. Samples of Ti-6Al-4V were processed, heat-treated and tested under monotonic and cyclic loading applying both uniaxial and bending loads. To reveal microstructure - mechanical property - relationships an in situ approach using electron back scatter diffraction and digital image correlation was applied. The results clarify the impact of a post-SLM heat treatment on the mechanical performance of cellular structures made from Ti-6Al-4V. Local strains determined by DIC reveal structure weaknesses already at low degrees of deformation and at an early stage of lifetime. The in situ approach helps in understanding the mechanical behavior and allows for local adaptation of the cell design in order to obtain improved load adapted structures.
KW - Additive manufacturing (AM)
KW - Cellular structures
KW - Digital image correlation (DIC)
KW - Microstructure
KW - Selective laser melting (SLM)
UR - http://www.scopus.com/inward/record.url?scp=84876739831&partnerID=8YFLogxK
U2 - 10.1016/j.jmatprotec.2013.03.013
DO - 10.1016/j.jmatprotec.2013.03.013
M3 - Article
AN - SCOPUS:84876739831
VL - 213
SP - 1558
EP - 1564
JO - Journal of Materials Processing Technology
JF - Journal of Materials Processing Technology
SN - 0924-0136
IS - 9
ER -