THE TITANIUM-GERMANIUM SYSTEM FROM 0 TO 30 PERCENT GERMANIUM

Technical Report · Wed Jun 01 04:00:00 EDT 1955

OSTI ID:4345588

Petersen, V C; Huber, R W

>The titanium-rich end of the Ti--Ge system was investigated by x-ray and metallographic methods and verified by resistivity and dilatometer measurements. A constitution diagram is proposed. The Ti-rich portion of the phase diagram is characterized by eutectic and peritectic reactions. The eutectic composition is 19% Ge, and the eutectic temperature 1,36O deg C. The peritectic reaction occurs at 9Os deg C and 4% Ge. Germanium is soluble in alpha Ti to a maximum of 4% at 9OS deg C and in beta Ti to a maximum of 12.5% at 1,36O deg C. Both limits of solubility decrease with decreasing temperatures. Although substantial quantities of Oe are soluble in beta Ti, beta is not retained on quenching. The beta phase probably transforms to alpha by a martensitic reaction. The temperature of the alpha to beta transformation is increased by the addition of Ge, resulting in a peritectic reaction at 9O5 deg C. Like Al and perhaps Sn, Ge is an alpha-stabilizing addition for Ti. Only one compound, Ti/sub 5/Ge/sub 3/ , exists in the Ti-rich portion of the system up to 47% Ge. Some data are presented on the electrical resistiviiy and temperature coefficients of resistance and expansion for Ti and a few Ti--Ge alloys. (auth)

• Research Organization: Bureau of Mines
• NSA Number: NSA-12-003678
• OSTI ID: 4345588
• Report Number(s): BM-RI-5365
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ALUMINUM
DIAGRAMS
ELECTRIC CONDUCTIVITY
EUTECTICS
EXPANSION
GERMANIUM ALLOYS
INTERMETALLIC COMPOUNDS
MARTENSITE
MEASURED VALUES
METALLOGRAPHY
MINERALOGY, METALLURGY, AND CERAMICS
PHASE DIAGRAMS
QUANTITY RATIO
RADIATIONS
SOLUBILITY
SPECIFIC HEAT
TIN
TITANIUM
TITANIUM ALLOYS