Additive Manufacturing Of Metals: The Technolog... -

Requires extensive post-processing (support removal, heat treatment) Rapid prototyping and on-demand manufacturing Limited library of printable "certified" alloys Improved energy efficiency and lower carbon footprint Potential for metallurgical defects like porosity Industry Expert Perspectives

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

“AM transforms more and more from rapid prototyping to rapid manufacturing applications which require not only profound knowledge of the process itself, but also of the microstructure” ScienceDirect.com · 9 years ago Future Outlook Additive Manufacturing of Metals: The Technolog...

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.

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. Uses a high-power laser to selectively melt layers

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. or residual stresses.

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