Comparison of different machine control modes during friction extrusion of AA2024
Research output: Contributions to collected editions/works › Article in conference proceedings › Research › peer-review
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28th International ESAFORM Conference on Material Forming, ESAFORM 2025. ed. / Pierpaolo Carlone; Luigino Filice; Domenico Umbrello. Association of American Publishers, 2025. p. 772-779 (Materials Research Proceedings; Vol. 54).
Research output: Contributions to collected editions/works › Article in conference proceedings › Research › peer-review
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TY - CHAP
T1 - Comparison of different machine control modes during friction extrusion of AA2024
AU - Rana, Harikrishna
AU - Chan, Chang
AU - Suhuddin, Uceu F.H.
AU - Ben Khalifa, Noomane
AU - Klusemann, Benjamin
N1 - Conference code: 28
PY - 2025
Y1 - 2025
N2 - The friction extrusion process has recently been explored for manufacturing extrudates with unique microstructures and improved material properties. The process can be classified as a severe plastic deformation (SPD) process in which the compressive shear strains and friction induced heat play a key role in achieving an intensely refined microstructure. The micro structure can be orchestrated by distinctive heating and plastic deformation conditions from different process parameters, viz. extrusion force, extrusion speed, spindle rotation speed, etc. Notably, the process dynamics lead to different strains and temperatures across the traverse and longitudeinal sections of the extrudates, eventually resulting in distinctive microstructures. The present work focuses on comparing the responses of two different machine control modes viz., force and displacement control. The extru date produced using displacement-control mode exhibited superior process stability, whereas force-control mode resulted in a more unstable process characterized by fluctuating spindle torques, varying extrusion speeds, and elevated temperatures, ultimately leading to lower extrudate quality. These process variabilities were reflected in the micro structures of the extru dates, particularly in the grain structures and defect formations.
AB - The friction extrusion process has recently been explored for manufacturing extrudates with unique microstructures and improved material properties. The process can be classified as a severe plastic deformation (SPD) process in which the compressive shear strains and friction induced heat play a key role in achieving an intensely refined microstructure. The micro structure can be orchestrated by distinctive heating and plastic deformation conditions from different process parameters, viz. extrusion force, extrusion speed, spindle rotation speed, etc. Notably, the process dynamics lead to different strains and temperatures across the traverse and longitudeinal sections of the extrudates, eventually resulting in distinctive microstructures. The present work focuses on comparing the responses of two different machine control modes viz., force and displacement control. The extru date produced using displacement-control mode exhibited superior process stability, whereas force-control mode resulted in a more unstable process characterized by fluctuating spindle torques, varying extrusion speeds, and elevated temperatures, ultimately leading to lower extrudate quality. These process variabilities were reflected in the micro structures of the extru dates, particularly in the grain structures and defect formations.
KW - Aluminum
KW - Displacement-Control
KW - Force-Control
KW - Friction Extrusion
KW - Engineering
UR - http://www.scopus.com/inward/record.url?scp=105008060068&partnerID=8YFLogxK
U2 - 10.21741/9781644903599-83
DO - 10.21741/9781644903599-83
M3 - Article in conference proceedings
AN - SCOPUS:105008060068
SN - 9781644903599
T3 - Materials Research Proceedings
SP - 772
EP - 779
BT - 28th International ESAFORM Conference on Material Forming, ESAFORM 2025
A2 - Carlone, Pierpaolo
A2 - Filice, Luigino
A2 - Umbrello, Domenico
PB - Association of American Publishers
T2 - 28th International ESAFORM Conference on Material Forming - ESAFORM 2025
Y2 - 7 May 2025 through 9 May 2025
ER -