Additive Manufacturing Of Metals: The Technolog... -

Most metal AM processes involve selectively melting or joining metal feedstocks, typically in powder or wire form. The three most industrially relevant technologies include:

The field is moving toward to enhance sustainability and further reduce costs. Current research priorities include the development of multi-material printing , real-time process monitoring, and sophisticated computational models to predict and prevent defects during the build process.

Feeds metal powder or wire directly into a heat source to build or repair components. This is frequently used for large-scale parts and remanufacturing applications. Materials and Metallurgy Additive Manufacturing of Metals: The Technolog...

Parts may suffer from defects such as anisotropy, micro-porosity, gas entrapment, or residual stresses. Advantages and Limitations Extreme design freedom and customization High initial equipment and production costs Significant reduction in material waste and scrap

Similar to SLM but uses an electron beam in a vacuum. It offers higher build rates but generally results in a rougher surface finish. Most metal AM processes involve selectively melting or

Uses a high-power laser to selectively melt layers of metal powder. It is known for producing high-precision, dense parts but often requires time-consuming post-processing.

Modern AM can process a wide range of engineering materials, including steel, aluminum, titanium, nickel-based superalloys, and even precious metals. However, the rapid heating and cooling cycles inherent to these processes create unique microstructures that differ significantly from traditionally wrought parts. Feeds metal powder or wire directly into a

“metal 3D printing can be the most affordable way to make parts for a significant slice of low to medium volume production” Markforged