Rmi Company

United States of America As Represented by the Secretary of the Air Force

Howard B Bomberger, Jr

Francis H Froes

Stanley R Seagle

A method for adding alloying elements having relatively low boiling points to base metal shaving relatively high melting points. The base metal is combined with the melting point-lowering metal; or metalloid and to this mixture is added the desired alloying metal or metals. No special equipment is required for this method.

Method for making alloy additions to base metals having higher melting

A method of adding trace elements to a base metal, particularly useful for adding yttrium or a rare earth metal to titanium. This method is especially useful for adding these and other trace elements which have low solubility in the base metal or a high melting point and tend to form undesirable segregates in the microstructure. The invention overcomes this difficulty by dispersing finely divided particles of trace element in a vehicle before adding the trace element to a melt charge. The vehicle may be finely divided base metal, or a solvent and diluent.

Method of adding trace elements to base metals

A method of producing a hot-worked titanium product in which a minute quantity of a workability-enhancing agent is incorporated in the melting charge. The agent may be yttrium, a rare earth of atomic number 57 to 71, or combinations thereof, and may be in the form of the metal itself or a compound, such as the oxide. The agent has the effect of making bodies of the material more workable; that is, more drastic working is achieved without reheating of the material between hot-working steps, yet any significant surface-cracking is avoided in the product.

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Canfield, OH, United States of America

Howard B Bomberger, Jr