United Technologies Corporation

Dorothea Nadette Carraway

John Joseph Marcin

Dilip M Shah

Marc R Sauerhoefer

Richard Alan Stone

David Henry Abbott

James Peter Aduskevich

Justin Andreas Neutra

Raymond Paul Langevin

A containerless method of producing a crack free metallic article of near-net shape includes melting a filler material into a metallic substrate or seed under conditions chosen to preclude cracking. In a preferred embodiment of the invention, a laser beam is operated at a relatively low power density and at a relatively large beam diameter at the substrate surface for an extended length of time to produce a molten pool with a low aspect ratio. Near-net shape is achieved by applying the process in a closed-loop, multi-axis material deposition system.

Crack free metallic articles

A filler material is melted into a metallic substrate having a defect under conditions chosen to preclude cracking. In a preferred embodiment of the invention, a laser beam is operated at a relatively low power density and at a relatively large diameter for an extended length of time to produce a molten pool with a low aspect ratio.

Method of repairing metallic articles by energy beam deposition with

Containerless method of producing crack free metallic articles by energy

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Manchester, CT, United States of America

Dorothea Nadette Carraway