STUDIES OF THE REINFORCEMENT OF METALS WITH ULTRA HIGH STRENGTH FIBERS
Abstract
A study of the reinforcement of high temperature metals (in particular Nichrome alloys) with ultr The extrusion-sintering composite preparation technique has been adopted as a standard approach in this work. The phenomenon of reinforcement apparently requires extremely precise control of the processes of diffusion in order to produce a chemical bond between the ceramic fiber and the metal matrix. Halides of vari 1- 1 - 8 5 * % B B C I U HE EMPHASIS HAS BEEN PLACED UPON THE DEVELOPMENT OF A BOND BETWEEN THE METAL MATRIX AND THE REINFORCING ALUMINA WHISKERS. The extrusion-sintering composite preparation technique has been adopted as a standard approach in this work. The phenomenon of reinforcement apparently requires extremely precise control of the processes of diffusion in order to produce a chemical bond between the ceramic fiber and the metal matrix. Halides of various metals either present in the o iginal metal alloy or deliberat ly added ar presently under study. Reinforcement of a Nichrome V lloy co sis ing of an increase of almost 50% in measured tensile s rength on a coldworke composite has be n achieved. Cold-worke ichrome, prepar d by the extrusion-sint ring process, usually exhibits a room temperature tensil strength of about 210,000 psi; the composite speci en, reinforced over ll with only 2-1/ % BY EIGH OF ALUMINA I KERS, SHOWED ROOM TEMPERATURE ENSILE S RENGTH OF JUST OVER )),))) PSI. ( uthor)AD-2946 6 2 +++Reinforce en of high e pera ure Nichro e alloy with ultra high strength alumina fibers (whiskers); metal halides as active agents for production of chemical bonds.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 29, 1962
- Accession Number
- AD0294636