Using lasers to 'heat and beat' 3D-printed steel could help reduce costs

https://techxplore.com/news/2023-10-lasers-3d-printed-steel.html

"controlling way solidifies after melting, and amount of heat, can program the properties of the end material. placed in furnace... laser used as microscopic hammer hardening metal during 3D printing... melting 2nd time with same laser relaxes metal's structure, allowing structural reconfiguration when part placed in furnace at relatively low temperature... made with alternating regions of strong and tough material, making performance comparable to steel that's been made through heating and beating"

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