This proposal identifies a novel processing method which will produce ultra high strength rhenium sheets. The rhenium sheets will be of 0.001 inch (0.0254 mm) thickness with an ultimate tensile strength of 400 KSI (2756 MPa) or higher and a total percent elongation of 2% or above. These sheets would have excellent mechanical stability and rigidity enabling the design of parts having very thin sections, and would be used in several aerospace applications. The novel processing technique utilizes the 45_ rolling mode which facilitates the reduction in thickness of rhenium to large degrees without microcracking. Accordingly the large costs associated with the thermomechanical processing of powder metallurgy (P/M) rhenium into thin sheet products might be significantly minimized and the mechanical and physical properties be optimized. The results of the proposed research are critical for performance improvement, and weight and cost reduction for aerospace structures. The production of very thin, ultra strong rhenium with reasonable ductility (greater than 2% elongation) is vital for space nuclear power applications and missile guidance systems. Some examples of dual use applications that will benefit from this technology include improved engine componets, high efficiency nozzle liners, and x-ray tubes with prolonged life. Potential Commecial Applications: The production of very thin, ultra strong rhenium is vital for space nuclear power applications and missile guidance systems. Dual use applications that will benefit from this technology include improved engine componets, high efficiency nozzle liners, and x-ray tubes with prolonged life
