Metal alloy mass for forming in the semisolid state

Details Metal alloy mass for forming in the semisolid state Metal alloy mass for forming in the semisolid state

1997-02-03

1999-11-09

Ryan, Patrick

Metal treatment

Process of modifying or maintaining internal physical...

With casting or solidifying from melt

148538, 148688, 148437, 420528, C22C 2100

Patent

active

059806605

ABSTRACT:
A metal alloy mass of a defined porosity for forming in the semi-solid state. When the porosity is measured by cooling in ambient air from a temperature corresponding to a liquid fraction ratio between 30 and 70% to the ambient temperature, the mass has a porosity ratio, measured by image analysis, between 2 and 20%, and preferably between 3 and 8%. Alternatively, when the gassing level is measured by a solidification test under 80 hPa, the mass has a volumetric porosity ratio between 3 and 50% and preferably between 4 and 25%.

REFERENCES:
patent: 4621676 (1986-11-01), Steward
patent: 4804034 (1989-02-01), Leatham et al.
Conf. Light Metals Adv. Prod. Fabr. (1992) p. 399-411 (Ghosh et al.) Montreal Canada (abstract), 1992.

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