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Practical Magic  /  Economics

Industrial aluminum waste actually makes metal stronger and more flexible than using pure, expensive raw materials.

Factory by-products like aluminum powder are usually discarded or melted down at a high cost because they are seen as contaminated junk. This process mixes that waste back into the forging process to create a varied internal structure. These mixed layers stop cracks from spreading through the metal, making the final part tougher than one made from a single uniform source. It turns a massive waste stream into a high-performance resource for building cars and planes. Manufacturers can now cut costs and carbon emissions while actually improving the safety of their products.

Original Paper

High-value utilization of powder by-products in fabricating high strength 6061 aluminum alloy through powder forging

SSRN  ·  6635161

To achieve efficient recycling of powder by-products generated from gas atomization, we investigated a low-cost manufacturing strategy that involves replacing fine powders with coarse pre-alloyed 6061 aluminum powder by-products (D50=107 μm) at proportions of 0-100 wt.%, followed by press-and-sintering and closed-die hot forging. Distinct sintering mechanisms of solid-state sintering at low temperature (576 ℃, LAF) and liquid phase sintering at medium temperature (606 ℃, MAF) were evaluated. The