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New technique to 3D print metal alloys developed

by:QUESTT     2020-07-19
Scientists have developed a 3D printing technology.
Strength aluminum alloy for aircraft and automotive parts.
This method can be applied to additional alloy families such as high
Strength of steel and nickel
High temperature alloys that are difficult to 3D print using existing technologies.
\"We\'re using 70-year-
Solution to the old kernel theory of a 100-year-
The old problem with 21st century machines, \"said Hunter Martin, a PhD student at the University of California in Santa Barbara, USA.
Scientists have developed a 3D printing technology.
Strength aluminum alloy for aircraft and automotive parts.
This method can be applied to additional alloy families such as high
Strength of steel and nickel
High temperature alloys that are difficult to 3D print using existing technologies.
\"We\'re using 70-year-
Solution to the old kernel theory of a 100-year-
The old problem with 21st century machines, \"said Hunter Martin, a PhD student at the University of California in Santa Barbara, USA.
Additive manufacturing of metal usually starts with alloy powder, which is applied in thin layer and heated with laser or other direct heat source to melt and solidify the layer.
Under normal circumstances, if high
Aluminum Alloy with non-welded strength such as Al7075 or AL6061, causing serious thermal cracks in parts
A state in which the metal part is pulled apart like a flaky biscuit.
New nano-particle functional technology through high decoration
The strength of nanoparticles with special selection is not welded alloy powder.
Nanoparticles
The functional powder is fed into a 3D printer that layers the powder and the laser
Merge each layer to build a three-tier
Dimension object.
In the process of melting and solidification, the nanoparticles act as the nuclear point of the desired alloy tissue, prevent thermal cracks, and allow to retain the complete alloy strength in the manufactured parts.
Since melting and solidification in additive manufacturing is similar to welding, the technology can also be used to manufacture weldable non-weldable alloys.
The technology is also scalable and uses low-cost materials.
Traditional alloy powders and nanoparticles produce printer raw materials, and nanoparticles are evenly distributed on the surface of powder particles.
\"Our first goal is to find out how to completely eliminate hot cracks.
\"We are trying to control the microstructure and the solution should be something that happens naturally in this way of material solidification,\" Martin said . \".
The study was published in the journal Nature.
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