Accession Number : AD0431507

Title :   METALLURGICAL EXAMINATION OF LB-2 COATED TITANIUM BOLT AND SHEET,

Corporate Author : MCDONNELL AIRCRAFT CORP ST LOUIS MO

Personal Author(s) : Morris,G.

Report Date : 10 MAR 1964

Pagination or Media Count : 8

Abstract : An LB-2 slurry coating was applied to a 6 A1-4V titanium bolt and to a coupon of AMS4901 titanium sheet. The bolt and sheet were then subjected to a standard diffusion cycle. As a result of the diffusion cycle, the sheet became embrittled. Metallurgical examination showed no detrimental effects that resulted directly from the application of the LB-2 coating. The coating appears to be porous and brittle in some areas on the bolt; the LB-2 coating on the titanium sheet showed numerous cracks. Dissolution of the base metal in either the bolt or sheet was not in evidence. (Author)

Descriptors :   (*BOLTS, TITANIUM ALLOYS), (*SHEETS, TITANIUM ALLOYS), (*TITANIUM ALLOYS, COATINGS), DIFFUSION, ALUMINUM ALLOYS, VANADIUM ALLOYS, METALLOGRAPHY, PHOTOMICROGRAPHY

Distribution Statement : APPROVED FOR PUBLIC RELEASE