Mechanical properties of coated titanium Beta-21S after exposure to air at 700 and 800 C

Conference · Mon Jun 01 00:00:00 EDT 1992

OSTI ID:7143957

Wiedemann, K E; Bird, R K; Wallace, T A; Clark, R K

Mechanical properties of Beta-21S (Ti-15Mo-3Al-2.7Nb-0.2Si, wt percent) with glass, aluminide, and glass-on-aluminide coatings less than 3-micron thick were studied. Coatings were deposited by sol-gel processing or electron-beam evaporation onto 4.5-mil (113-micron) thick Beta-21S sheet from which, after oxidizing in air at 700 or 800 C, tensile test specimens were machined. Plastic elongation was the most severely degraded of the tensile properties; the glass-on-aluminide coatings were the most effective in preventing degradation. It was found that oxygen trapping by forming oxides in the coating, and reactions between the coatings and the Beta-21S alloy played significant roles.

• Research Organization: National Aeronautics and Space Administration, Hampton, VA (United States). Langley Research Center
• OSTI ID: 7143957
• Report Number(s): N-92-30205; NASA-TM-104220; NAS-1.15:104220; CONF-920604-; CNN: RTOP 506-43-71-01
• Resource Relation: Conference: 7. world conference and exhibition on titanium, San Diego, CA (United States), 28 Jun - 2 Jul 1992
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
PROTECTIVE COATINGS
TENSILE PROPERTIES
MOLYBDENUM ALLOYS
NIOBIUM ALLOYS
TITANIUM BASE ALLOYS
AIR
ELECTRON BEAMS
EVAPORATION
GLASS
OXYGEN
SOL-GEL PROCESS
TRAPPING
ALLOYS
BEAMS
COATINGS
ELEMENTS
FLUIDS
GASES
LEPTON BEAMS
MECHANICAL PROPERTIES
NONMETALS
PARTICLE BEAMS
PHASE TRANSFORMATIONS
TITANIUM ALLOYS
360103* - Metals & Alloys- Mechanical Properties