Comparative sampling molds evaluation
- Pechiney Centre de Recherches de Voreppe (France)
- Aluminum Pechiney, Voreppe (France). Div. Alliages de Moulage
The metallurgical industry needs to cast alloys with narrow tolerances in their chemical composition in order to reduce variability of their use properties. Therefore appropriate sampling practices and analytical methods are required. Both accuracy and precision of the analytical results are limited by the non-homogeneity of as-cast disk or cylinder samples, which results from macrosegregation phenomenon. This paper presents a comparison between six commonly used molds: four molds recommended by ASTM standards (center-pour molds type B and vacuum mold), mushroom shaped and cylinder molds. Two complementary approaches are exhibited for the different molds designs: (1) solidification modeling in order to predict macrosegregation localization using the Simulor software; (2) experimental characterization. Radial and axial segregation profiles are determined by Analytical Scanning Electron Microscopy in addition to analytical precision evaluation by spark optical emission and X-Ray fluorescence spectrometries for a given machining depth.
- OSTI ID:
- 372012
- Report Number(s):
- CONF-960202-; ISBN 0-87339-312-0; TRN: IM9641%%89
- Resource Relation:
- Conference: Annual meeting and exhibition of the Minerals, Metals and Materials Society (TMS), Anaheim, CA (United States), 4-8 Feb 1996; Other Information: PBD: 1996; Related Information: Is Part Of Light metals 1996; Hale, W. [ed.] [Anglesey Aluminum Metal Ltd., North Wales (United Kingdom)]; PB: 1304 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
Direct Cast U-6Nb – 2017 Progress on Cylindrical Castings
Centrifugally cast bimetallic pipe for offshore corrosion resistant pipelines