3d modelling of net-shape forming by hot isostatic pressing

Book · Tue Dec 31 04:00:00 EST 1996

OSTI ID:442812

Dellis, C; Abondance, D; Baccino, R; Moret, F ^[1]

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1. CEA/CEREM, Grenoble (France)

Net-shape Hot isostatic Pressing (HIP) of TA6V powder can be an economical way to manufacture aeronautical and space engines complex parts. The objective of this study was to develop the prediction tools for the final geometry and density of a part fabricated with this technique. In a first step, mechanical and physical properties of TA6V powder necessary to modelling (pressure-densification curve, creep properties) have been experimentally determined. Then, a validation part has been fabricated and 3D measurements have been realized. In parallel, a 3D numerical modelling module, PRECAD/M, using finite element method has been developed. This tool has been used to simulate the densification of the validation part. The difference between computation and measurement results is lower than 0.1 mm in internal sections. An incompletely densified part has also been produced and the comparison between computed and measured densities is presented. The accuracy of density modelling is better than 1% of relative density. In the last section, the capability for real 3D modelling of complex shapes is demonstrated.

• Sponsoring Organization: Centre National d`Etudes Spatiales (CNES), 75 - Paris (France)
• OSTI ID: 442812
• Report Number(s): CONF-960515--; ISBN 0-87170-568-0
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AEROSPACE INDUSTRY
BULK DENSITY
COMPRESSION STRENGTH
COMPUTERIZED SIMULATION
ENGINES
EXPERIMENTAL DATA
FINITE ELEMENT METHOD
HOT PRESSING
MATHEMATICAL MODELS
TANTALUM ALLOYS
VALIDATION
VANADIUM ALLOYS