MICROSTRUCTURE VS CASTING PROCESSES IN THE FE-SI-CA-AL SYSTEM

• Type: Article in International Scientific Journal
• Date: 1993

Authors

MARGARIDO, F (Author) Other; José Inácio Martins (Author) FEUP; GONCALVES, A (Author) Other; FIGUEIREDO, MO (Author) Other

Journal

The Journal is awaiting validation by the Administrative Services.

Title: MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

Vol. 173

Pages: 115-118

ISSN: 0921-5093

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Scientific classification

FOS: Engineering and technology > Other engineering and technologies

Other information

Authenticus ID: P-001-MB5

DOI: 10.1016/0921-5093(93)90198-n

Abstract (EN): A quaternary phase isostructural with alpha-Fe1-xSi2 and named ''caalsifer'' for its chemical constitution was earlier detected in industrial ferrosilicon alloys (Margarido and Figueiredo, 1988). With the aim of ascertaining the possible domain for such a non-equilibrium compound and contributing to the understanding of microstructure and phase solidification in casting processes of ferrosilicon alloys, a systematic study of phase formation within the quaternary Fe-Si-Al-Ca system was undertaken. Results are presented of laboratory experiments using both are and induction fusion furnavces with water-cooled copper crucibles, and compositions close to that assumed for cadsifer. The obtained materials were chemically and compositionally characterized through scanning electron microscopy and X-ray diffraction. A relation is tentatively established between microstructure plus phase assemblage on the one hand, and cooling rate on the other.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4