Microstructural homogenization of additively manufactured titanium articles

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United States of America

PATENT NO 11987872
SERIAL NO

17476349

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Abstract

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A method of modifying the physical characteristics of a base titanium alloy article previously manufactured through a selective melting process is disclosed. The method includes introducing hydrogen through a thermohydrogen process to the base titanium alloy article, the resulting titanium alloy article exhibiting an isotropic and fine grained equiaxed microstructure. The thermohydrogen process may include introducing hydrogen into the base titanium alloy article to lower the beta transus temperature, heating the base titanium article above the lowered beta transus temperature to form hydrided beta, lowering the temperature of the base titanium alloy article to affect a eutectoid transformation, and dehydriding the base titanium alloy article via vacuum heating. The base titanium alloy article may have an elevated oxygen content and/or hydrogen may be introduced at 0.4 weight percent or greater.

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Patent Owner(s)

Patent OwnerAddress
PRAXIS POWDER TECHNOLOGY INC604 QUEENSBURY AVE QUEENSBURY NY 12804

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Grohowski,, Jr Joseph A Glen Falls, US 14 281
Sheffield, Paul H Queensbury, US 5 18

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