Accession Number:

ADA075877

Title:

Magnesium Alloy Research Studies

Descriptive Note:

Technical rept.

Corporate Author:

RENSSELAER POLYTECHNIC INST TROY NY

Personal Author(s):

• Jones, A.
• Lennon, J. H.
• Nash, R. R.
• Chang, W. H.
• MacPeek, E. G.

Report Date:

1952-09-01

Pagination or Media Count:

141.0

Abstract:

Diagrams are presented to show the constitution at 500 F and 700 F for the magnesium-lithium-aluminum and magnesium-lithium-zinc alloy systems. These diagrams were determined mainly by microscopic examination of alloys quenched from elevated temperatures. The solubility for aluminum and for zinc was less at 500 F than at 700 F but solubility for lithium was almost the same at these two temperatures. The study of dilute magnesium alloys found a good combination of properties for magnesium-1.0 zinc-0.4 cerium. Addition of cerium refined the grain structure and introduced a small amount of a second constituent. The best properties were obtained with a fine equiaxed grain structure produced by warm rolling and annealing just above the recrystallization range. These conditions of structure and properties were not obtainable by a single cycle of cold rolling and annealing. Single crystals of high purity magnesium were grown by controlled solidification in a gradient furnace. The furnace and the mold remained stationary and only the temperature gradient moved. The conditions of growth were found to be more critical for single crystals of magnesium-aluminum and magnesium-zinc alloys.

Descriptors:

• *MAGNESIUM ALLOYS
• SINGLE CRYSTALS
• LITHIUM
• PURITY
• ALUMINUM
• CERIUM
• ZINC
• SOLUBILITY
• CRYSTAL GROWTH
• GRAIN STRUCTURES(METALLURGY)
• PHASE DIAGRAMS

Subject Categories:

• Metallurgy and Metallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE