Towards underwater additive manufacturing via additive friction stir deposition

Article Materials Science, Multidisciplinary

Microstructure evolution of 316L stainless steel during solid-state additive friction stir deposition

Hossein Beladi et al.

Summary: Solid-state additive friction stir deposition was used for three-dimensional printing of 316L stainless steel. The resulting microstructure was exceptionally fine, with a significantly different misorientation angle distribution from the original material, and a texture showing strong shear components.

PHILOSOPHICAL MAGAZINE (2022)

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Article Materials Science, Multidisciplinary

Underwater additive manufacturing of Ti-6Al-4V alloy by laser metal deposition: Formability, gran growth and microstructure evolution

Yunlong Fu et al.

Summary: This paper presents the first use of underwater laser metal deposition technology in building thin walled Ti-6Al-4V parts, showing that stable local dry cavity and shielding-gas flow layer formed during the ULMD process using an improved ULMD nozzle can generate uniform thin-walled parts without cracks and pores. Columnar beta-grains were observed throughout the ULMD part, growing epitaxially opposite to the heat flow direction and changing in size with deposition layer increase.

MATERIALS & DESIGN (2021)

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Article Chemistry, Multidisciplinary

Solid-State Metal Additive Manufacturing for Structural Repair

Ryan B. Gottwald et al.

Summary: Structural metal components are essential in various industries but often face damage. Structural repair technologies are cost-effective methods to restore components, reducing the need for replacement.

ACCOUNTS OF MATERIALS RESEARCH (2021)

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Article Chemistry, Physical