Process Stability and Reproducibility of the Dieless Drawing Process for AZ31 Magnesium Wires
Research output: Contributions to collected editions/works › Article in conference proceedings › Research › peer-review
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Process Stability and Reproducibility of the Dieless Drawing Process for AZ31 Magnesium Wires. / Braatz, Merle; Bohlen, Jan; Khalifa, Noomane Ben.
Achievements and Trends in Material Forming: Peer-reviewed extended papers selected from the 25 th International Conference on Material Forming (ESAFORM 2022). ed. / Gabriela Vincze; Frédéric Barlat. Baech : Trans Tech Publications Ltd, 2022. p. 389-400 (Key Engineering Materials; Vol. 926 ).Research output: Contributions to collected editions/works › Article in conference proceedings › Research › peer-review
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TY - CHAP
T1 - Process Stability and Reproducibility of the Dieless Drawing Process for AZ31 Magnesium Wires
AU - Braatz, Merle
AU - Bohlen, Jan
AU - Khalifa, Noomane Ben
N1 - Conference code: 25
PY - 2022
Y1 - 2022
N2 - Magnesium (Mg)-based wires are in the focus of interest for numerous applications like micro-forming technologies or medical engineering. Manufacturing thin Mg-based wires is widely realized by applying a conventional multiple pass cold wire drawing process. This requires a complex manufacturing schedule of multiple passes with intermediate heat treatments to overcome work hardening, because of the cold forming process. Especially Mg and its alloys are known for their rather low formability at room temperature associated with the hexagonal close-packed lattice structure. The dieless drawing process uses local heating to initialize a localized plastic zone under an external tensile load to achieve higher reductions in diameter in a single wire drawing pass. It can therefore present a solution for a more efficient warm manufacturing process of Mg-based wires. In this study, the stability of the steady state material flow during a dieless wire drawing process and its reproducibility was investigated. For this purpose, a variation of process parameters was selected and wire manufacturing was carried out using magnesium alloy AZ31. A single and double dieless drawing process was applied. Additionally, a conventional cold wire drawing process including a die with the same forming schedule was executed as a benchmark experiment. The results of this study show, that the dieless drawing process is not only a stable process after reaching the steady state, but it is also a reproducible and accurately adjustable process. Moreover, the dieless drawing process maintains the property profile of the starting material to a large extend.
AB - Magnesium (Mg)-based wires are in the focus of interest for numerous applications like micro-forming technologies or medical engineering. Manufacturing thin Mg-based wires is widely realized by applying a conventional multiple pass cold wire drawing process. This requires a complex manufacturing schedule of multiple passes with intermediate heat treatments to overcome work hardening, because of the cold forming process. Especially Mg and its alloys are known for their rather low formability at room temperature associated with the hexagonal close-packed lattice structure. The dieless drawing process uses local heating to initialize a localized plastic zone under an external tensile load to achieve higher reductions in diameter in a single wire drawing pass. It can therefore present a solution for a more efficient warm manufacturing process of Mg-based wires. In this study, the stability of the steady state material flow during a dieless wire drawing process and its reproducibility was investigated. For this purpose, a variation of process parameters was selected and wire manufacturing was carried out using magnesium alloy AZ31. A single and double dieless drawing process was applied. Additionally, a conventional cold wire drawing process including a die with the same forming schedule was executed as a benchmark experiment. The results of this study show, that the dieless drawing process is not only a stable process after reaching the steady state, but it is also a reproducible and accurately adjustable process. Moreover, the dieless drawing process maintains the property profile of the starting material to a large extend.
KW - cold wire drawing
KW - dieless wire drawing
KW - hot forming
KW - magnesium wire
KW - process stability
KW - Engineering
UR - http://www.scopus.com/inward/record.url?scp=85140438624&partnerID=8YFLogxK
UR - https://main.scientific.net/book/achievements-and-trends-in-material-forming/978-3-0357-3750-9/ebook
U2 - 10.4028/p-lm7s8y
DO - 10.4028/p-lm7s8y
M3 - Article in conference proceedings
AN - SCOPUS:85140438624
SN - 978-3-0357-1759-4
T3 - Key Engineering Materials
SP - 389
EP - 400
BT - Achievements and Trends in Material Forming
A2 - Vincze, Gabriela
A2 - Barlat, Frédéric
PB - Trans Tech Publications Ltd
CY - Baech
T2 - Conference - 25th International Conference on Material Forming, ESAFORM 2022
Y2 - 27 April 2022 through 29 April 2022
ER -