Low porosity, fine grain sized strontium-treated magnesium alloy

Details Low porosity, fine grain sized strontium-treated magnesium alloy Low porosity, fine grain sized strontium-treated magnesium alloy

1991-03-28

1992-09-01

Roy, Upendra

Metal treatment

Stock

Magnesium base

148536, 420402, 420406, 420409, 420590, 1641221, C22C 2300, C22F 100

Patent

active

051435640

ABSTRACT:
Cast magnesium alloy parts being substantially free of microporosity and having a fine grain size are produced by addition of strontium in an amount of 0.001 to 0.1%, by weight, to the melt of the magnesium alloy, prior to casting; the addition of strontium effects a reduction in the grain size and concentrates the shrinkage microporosity, whereby the microporosity can be shifted by conventional techniques to an appendix of the casting which is subsequently removed.

REFERENCES:
patent: 3119725 (1964-01-01), Foerster
patent: 3290742 (1966-12-01), Petrovich
patent: 4729874 (1988-03-01), Meyer-Grunow
patent: 4886557 (1989-12-01), Chadwick
Magnesium-Strontium Binary Phase Diagram, in Binary Alloy Phase Diagrams, ASM 1986, (eds.) Massalski et al., pp. 1549-1550.
Kubichek, L. Izy, V.U.Z. Tsvetnaya Met 2 (1959), pp. 154-157, (with French translation).

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