Volume 95 Issue 38 | p. 5 | News of The Week
Issue Date: September 25, 2017 | Web Date: September 21, 2017

3-D printers make aluminum pieces without cracks

Nanoparticles help print metal alloys more effectively
Department: Science & Technology
News Channels: Materials SCENE, Nano SCENE
Keywords: 3-D printing, metal alloy, aluminum alloy, nanoparticle

Three-dimensional printing has become a popular method for making objects with complex geometries. But use of metal alloys with the technique, which could produce components for aerospace and automotive applications, has lagged. Of the 5,500 alloys in industrial use today, only about 10 can be printed. That’s because metal alloys are typically 3-D printed by rastering a laser across a bed of metal alloy powder to fuse it layer-by-layer. But the way these alloys crystallize . . .

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