Accession Number : AD0783293

Title :   Exploratory Development on Low-Cost Primary Fabrication Processes for Boron-Aluminum Composites.

Descriptive Note : Final rept. Jun-Nov 73,

Corporate Author : UNITED AIRCRAFT RESEARCH LABS EAST HARTFORD CONN

Personal Author(s) : Prewo,Karl M.

Report Date : MAR 1974

Pagination or Media Count : 85

Abstract : Boron fiber reinforced aluminum matrix composites can be successfully fabricated in air with total hot pressing times of ten minutes or less. These composites have been fabricated without the need for elaborate bagging or out-gassing procedures and demonstrate that significant cost savings in processing can be achieved without any sacrifice in composite performance. The process procedure, referred to as 'Quick Bonding', is fully described in the report along with resultant composite tensile and fatigue properties. Composite panels were fabricated in constant and nonconstant cross section configurations with composite panel dimensions exceeding those of the hot press using single and multiple step pressing procedures. Specimens exhibited axial tensile strengths of up to 290,000 psi, transverse tensile strengths of 30,000 psi and transverse tensile failure strains of over 1%. (Author)

Descriptors :   *Fiber reinforced composites, Fabrication, Boron, Aluminum, Diffusion bonding, Tapes, Hot pressing, Bonding, Fiber reinforcement

Subject Categories : Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE