Induction melting and casting of titanium alloy aircraft components. Final technical report, Mar 1970--Jul 1972. [Ti--6Al--4V, Ti--6Al--2Sn--4Zr--2Mo, Ti--3Al--8V--6Cr--4Mo--4Zr (Beta C), and Ti--11Mo--4. 5 Sn--6Zr (Beta 111)]

Technical Report · Sat Jul 01 00:00:00 EDT 1972

OSTI ID:7116577

Piwonka, T S; Cook, C R

Induction melting of titanium alloys using a semi-levitation technique and bottom pouring in graphite crucible was evaluated for four titanium alloys, Ti--6Al--4V, Ti--6Al--2Sn--4Zr--2Mo, Ti--3Al--8V--6Cr--4Mo--4Zr (Beta C), and Ti--11Mo--4.5Sn--6Zr (Beta 111). Precision investment (lost wax) casting molds coated with pyrolytic graphite were used with the melting technique to make castability, tensile specimen, and bearing housing segment castings. Castability and tensile properties of the alloys were characterized. Bearing housing segments were subject to porosity which was extensively studied. Process capabilities and limitations were investigated for induction melting and the pyrolytic graphite coated mold. Properties of castings were determined, and weldability of the four cast alloys was evaluated. Effects of the casting process on microstructure were investigated. (auth)

• Research Organization: TRW, Inc., Cleveland, OH (USA)
• DOE Contract Number: F33615-70-C-1409
• OSTI ID: 7116577
• Report Number(s): AD-905524; ER-7468-8
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
CASTING
MELTING
MICROSTRUCTURE
TENSILE PROPERTIES
WELDABILITY
TITANIUM BASE ALLOYS
MOLYBDENUM ALLOYS
TIN ALLOYS
ZIRCONIUM ALLOYS
VANADIUM ALLOYS
CHROMIUM ALLOYS
AIRCRAFT
BEARINGS
INDUCTION
INDUCTION WELDING
TERNARY ALLOY SYSTEMS
QUATERNARY ALLOY SYSTEMS
ALLOY SYSTEMS
ALLOYS
CRYSTAL STRUCTURE
FABRICATION
JOINING
MECHANICAL PROPERTIES
PHASE TRANSFORMATIONS
TITANIUM ALLOYS
WELDING
360101* - Metals & Alloys- Preparation & Fabrication
360102 - Metals & Alloys- Structure & Phase Studies
360103 - Metals & Alloys- Mechanical Properties