Structural panel having boron reinforce face sheets and associat

Details Structural panel having boron reinforce face sheets and associat Structural panel having boron reinforce face sheets and associat

1997-11-24

1999-09-21

Jones, Deborah

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

148527, 148516, B32B 100

Patent

active

059552077

ABSTRACT:
The face sheet is formed of a titanium alloy which includes boron that can be superplastically formed and diffusion bonded to form a structural panel. The structural panel generally includes a pair of face sheets that are disposed on and bonded to opposite sides of a metallic core. By forming at least one of the face sheets of a titanium alloy which includes boron, such as between about 0.2 weight percent and about 2 weight percent of boron, the resulting structural panel is stiffened without any corresponding increase in weight relative to structural panels formed of conventional titanium alloys. Preferably, powdered titanium diboride (TiB.sub.2) is added to a titanium alloy charge that is subsequently formed into a boron reinforced titanium alloy sheet. During the forming process, the TiB.sub.2 reacts to produce TiB reinforcements that are scattered throughout the metal matrix to increase the modulus and correspondingly stiffen the resulting face sheet.

REFERENCES:
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patent: 3927817 (1975-12-01), Hamilton et al.
patent: 4217397 (1980-08-01), Hayase et al.
patent: 4304821 (1981-12-01), Hayase et al.
patent: 5024369 (1991-06-01), Froes et al.
patent: 5768679 (1998-06-01), Taguchi et al.

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