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PRODUCTION OF FINE GRAIN MICRO-ALLOYED NIOBIUM SHEET VIA INGOT METALLURGY
PRODUCTION OF FINE GRAIN MICRO-ALLOYED NIOBIUM SHEET VIA INGOT METALLURGY
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机译:英制冶金生产细晶粒微合金铌薄板
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摘要
A method of making an alloy of niobium that includes: A) forming a blend comprising niobium powder and a powder of a metal selected from the group consisting of yttrium, aluminum, hafnium, titanium, zirconium, thorium, lanthanum and cerium and pressing the blend to form pressed blend; B) attaching the pressed blend to an electrode comprising niobium; C) melting the electrode and pressed blend under vacuum arc remelting conditions, such that the blend mixes with the melted electrode; D) cooling the melted electrode to form an alloy ingot; and E) applying thermo-mechanical processing steps to the alloy ingot to form a wrought product. The method provides a fully recrystallized niobium wrought product with a grain size finer that ASTM 5, that can be used to make deep drawn cups and sputtering targets.
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