Accession Number:

AD0600391

Title:

DESIGN DATA STUDY FOR COATED COLUMBIUM ALLOYS.

Descriptive Note:

Final summary technical rept., 1 Mar 63-1 Mar 64,

Corporate Author:

TRW ELECTROMECHANICAL DIV THOMPSON RAMO WOOLDRIDGE INC CLEVELAND OHIO

Personal Author(s):

• Warmuth,D. B.

Report Date:

1964-03-30

Pagination or Media Count:

208.0

Abstract:

Design data properties were determined for four protective coating columbium alloy systems involving Pfaudler and TRW oxidation protective coatings on B-66 and D-43 columbium alloys up to 2600 F. Prior to the design data study, preliminary oxidation low pressure and one atmosphere, bend and tensile tests were conducted on B-66 and D-43 alloys using two different Pfaudler coatings and the TRW Cr-Ti-Si coating. Based on these evaluation tests the Pfaudler single-cycle silicide coating and the TRW coating were selected for the mechanical properties evaluation. The following design properties were determined for the four coating-base metal systems a cyclic oxidation protective life, b tensile properties of uncoated sheet in vacuum and coated sheet in air, c creep properties of coated sheet in air and d coating deformation tolerance. In addition, a limited evaluation of a the ballistic impact resistance of the coatings at room temperature and b the tensile properties of coated joints was conducted. Author

Descriptors:

• *NIOBIUM ALLOYS
• PROTECTIVE TREATMENTS
• OXIDATION
• HIGH TEMPERATURE
• SCIENTIFIC RESEARCH
• SILICIDES
• CREEP
• DEFORMATION
• METAL JOINTS
• BALLISTICS
• TOUGHNESS
• TITANIUM ALLOYS
• CHROMIUM ALLOYS

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE