Magnesium-Calcium-Nickel/Copper Alloys and Articles.
Patent, Filed 1 Oct 87, patented 13 Sep 88,
DEPARTMENT OF THE AIR FORCE WASHINGTON DC
Pagination or Media Count:
This invention relates to magnesium base alloys. In one aspect this invention relates to novel magnesium base alloys. Magnesium alloys are best known for their light weight and high strength-to-weight ratio. Accordingly, they are used generally in application where weight is a critical factor and where high mechanical integrity is required. A novel magnesium alloy consisting essentially of about 6 to 14 weight percent calcium, about 4 to 8 weight percent of copper or nickel, balance magnesium. There is also provided a process for producing a magnesium alloy article having improved properties which comprises the steps of providing a rapidly solidified product having the composition defined above and having a maximum average thickness of about 200 microns in at least one dimension, introducing the rapidly solidified product into a mold, and consolidating the rapidly solidified product to obtain a desired densification of rapidly solidified product. Consolidation may be carried out by hot isostatic pressing HIPing the rapidly solidified product at a pressure of about 100 to 300 MPa and a temperature of about 150 to 350 C. for a time sufficient to obtain the desired densification. Alternatively, consolidation may be accomplished by extrusion using the same temperature range, and an extrusion ratio of about 101 to 301. Keywords Patents. KT
- Metallurgy and Metallography
- Fabrication Metallurgy