Method of producing a tantalum stock material of high ductility
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United States of America Patent
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Jul 4, 1989
Grant Date -
N/A
app pub date -
Mar 23, 1988
filing date -
Apr 10, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method is described for the production of a ductile tantalum stock material for high-speed deformation use. A bar-shaped body is made from directly reduced tantalum powder of a given purity and is remelted repeatedly as a consumable electrode in an electron beam furnace. The obtained ingot is shaped into a slab which, after being machined to a smooth surface, is further worked to produce the stock material. At least one heat treatment under vacuum is included in the process of making the stock material.
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