CORRELATION BETWEEN "COMPOSITION-REFRACTORINESS" IN MAGNESIUM-BASED SYSTEMS

Journal Article · Mon Jan 01 04:00:00 EST 1962 · Tr. Inst. Met. im. A.A. Baikova, Akad. Nauk SSSR

OSTI ID:4654373

Drits, M E; Sviderskaya, Z A; Rokhlin, L L; Padezhnova, E M; Yakovleva, L I

Elements were previously tested for their suitability as alloying additions of Mg; therefore, in view of the interest of deformed and thermally treated alloys as structural material, the relation between the composition of these alloys and their high-temperature resistance was investigated. The binary systems Mg--Al, Mg- Zn, Mg-Mn, MgTh, Mg--Ce, Mg--Nd, and Mg--Ca were studied in the temperature range from 150 to 300 deg C. The specimens were quenched from temperatures as high as 550 deg C in the case of the Th and Ce alloys after 10 to 24 hour long soakings with 60 to 70 deg C water. They were stabilized for 100 hours at the test temperature. The relative heat resistance of the specimens was estimated on the basis of tensile strength raeasurements. The results indicated that the mechanism of the interaction affects greatly the refractory character of the alloys. In systems with elevated and strongly temperature-dependent solubility in the liquid state, the formation of highly alloyed solid solutions was most effective for increasing the refractoriness. Strong interaction processes at the phase boundary and softening of the second phase indicated in most cases a negative effect of the heterogenization in otherwise similar systems. In alloys exhibiting limited solubility in the solid phase, with only a slight temperature dependence of the solubility, the strengthening effect was due to the decomposition of the solution. Th, Nd, and Ca exhibited a strengthening effect. (TTT)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-17-034461
• OSTI ID: 4654373
• Journal Information: Tr. Inst. Met. im. A.A. Baikova, Akad. Nauk SSSR, Journal Name: Tr. Inst. Met. im. A.A. Baikova, Akad. Nauk SSSR Vol. Vol: No. 11
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

ALUMINUM ALLOYS
CALCIUM
CALCIUM ALLOYS
CERIUM ALLOYS
CHEMICAL REACTIONS
DECOMPOSITION
HEAT RESISTING METALS
HEAT TREATMENTS
IMPREGNATION
MAGNESIUM
MAGNESIUM ALLOYS
MANGANESE ALLOYS
MATERIALS TESTING
MEASURED VALUES
METALS, CERAMICS, AND OTHER MATERIALS
NEODYMIUM
NEODYMIUM ALLOYS
PHASE DIAGRAMS
QUENCHING
REFRACTORIES
SOLID SOLUTIONS
STABILITY
TEMPERATURE
TENSILE PROPERTIES
THORIUM
THORIUM ALLOYS
WATER
ZINC ALLOYS