Premium Strength in Sand-Cast Magnesium Alloys
Abstract
The paper describes results of a study of some of the factors affecting high mechanical properties and their proper distribution throughout the casting. Experimental work was carried out first on test plates of 1/2-inch to 2-inch thickness, and later checked on more complicated castings. Variables studied included proper use of chills to ensure directional solidification and elimination of the effect of unsoundness in plates of various thickness, as well as more efficient heat treating techniques for the various alloys. Results on commercial casting shapes showed that high properties, even in sections of 2-inch thickness, could consistently be obtained which are equal or in some cases higher than typical properties reported for separately-cast test bars. Mg-Al-Zn alloys show a greater sensitivity to adverse solidification conditions than the finer-grained zirconium-containing alloys. The newly developed Mg-Zn-Ag-Zr alloys showed exceptionally high properties, exceeding those obtainable in any commercial magnesium alloy.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1964
- Accession Number
- ADA397493
Entities
People
- B. Lagowski
- J. W. Meier