Accession Number:

ADA014795

Title:

Boron-Aluminum Titanium Hybrid Composites.

Descriptive Note:

Final rept. Mar-Aug 74,

Corporate Author:

AIR FORCE MATERIALS LAB WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

Report Date:

1975-05-01

Pagination or Media Count:

44.0

Abstract:

Roll diffusion bonded tapes of boron-aluminum were interleaved with foils of commercial pure and alloyed titanium and diffusion bonded into plate material. Tensile testing of both longitudinal and transverse specimens indicated a very small drop in longitudinal strength and a dramatic increase in transverse strength to 48.6 ksi and 67 ksi for the Ti-75A and Ti-6Al hybrid, respectively, for annealed unidirectional composites. These transverse strength increases were considerably in excess of rule of mixtures predictions. Metallographic examination of representative material indicated well spaced and adequately bonded material. Direct comparison with similarly bonded unidirectional and cross-plied boron-aluminum plate indicated that, when considering both mechanical properties and composite cost, considerable advantage could be gained through the use of the hybrid composite studied.

Subject Categories:

  • Laminates and Composite Materials
  • Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE