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Aluminium powder forging process using a rotating platen

Youn, S., Park, J., Park, C., Kim, Yun-Hwan and Ma, Xiang 2004, Aluminium powder forging process using a rotating platen, in Aluminium alloys : their physical and mechanical properties : proceedings of the 9th International Conference on aluminium alloys (ICAA9), IMEA, North Melbourne, Vic., pp. 212-217.

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Title Aluminium powder forging process using a rotating platen
Author(s) Youn, S.
Park, J.
Park, C.
Kim, Yun-Hwan
Ma, Xiang
Conference name International Conference on Aluminium Alloys (9th : 2004 : Brisbane, Qld.)
Conference location Brisbane, Qld.
Conference dates 2-5 Aug. 2004
Title of proceedings Aluminium alloys : their physical and mechanical properties : proceedings of the 9th International Conference on aluminium alloys (ICAA9)
Editor(s) Nie, J. F.
Morton, A. J.
Muddle, B. C.
Publication date 2004
Start page 212
End page 217
Publisher IMEA
Place of publication North Melbourne, Vic.
Summary A torsional upset forging process is analysed on the basis of plasticity theory for powder metal forging. Torsional upset forging is a process to be performed by rotating a lower die with a punch travelling along the longitudinal direction of a work-piece. In this study, an upper bound analysis considering bulging effect, finite element method simulation (DEFORM3D), and experimental research have been performed for the process. A simple kinematically admissible velocity field for a three dimensional deformation is presented for the torsional upset forging of a cylindrical billet. Distributions of stress, strain, and forging load in the process have been obtained, and compared with those in conventional upset forging. In the process, an increase in a friction factor and rotation speed results in a decrease in magnitude of upset force, dead metal zone, and non-homogeneous deformation. This process can reduce forming load, which leads to improvement of die life, and also reduce bulging effect. In addition, the initial sintered-structure and density distribution is improved by the process and surface defect due to high deformation is decreased.
ISBN 1876855223
9781876855222
Language eng
Field of Research 091399 Mechanical Engineering not elsewhere classified
Socio Economic Objective 840301 Alumina Production
HERDC Research category E2 Full written paper - non-refereed / Abstract reviewed
Copyright notice ©2004, Institute of Materials Engineering Australasia Ltd
Persistent URL http://hdl.handle.net/10536/DRO/DU:30014285

Document type: Conference Paper
Collection: School of Engineering
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