The Material Science of Metal 3D Printing

What people said

Animats · 2020-10 · Recommendation

“Our hybrid 3D printing method has opened up the possibility of fabricating 3D electronics so that devices and robots used in healthcare and nursing care could become significantly better than what we have today.” And right there, the PR operation blew their credibility. Here's a useful video on the metallurgy of 3D printing metal.[1] Actual X-ray movies of what's going on during laser sintering, why 3D printed metal parts have crack growth problems, and what's being done about it. [1] [VIDEO]

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kbenson · 2020-10 · Recommendation

I was going to write a reply saying that I don't see why we can't use it in many places as long as we understand the parameters of the product, but as so often happens I found an excellent source that actually explains your stance in details.[1] The TL;DR is that there are lots of imperfections in 3D printed parts, which means they typically fail at much lower stresses. It actually includes some pretty good video illustrating this at a microscopic level. That said, there are apparently new techniques being researched and discovered that have promise to increase the quality of 3D printed parts. One way to thing of it is that we have hundreds to thousands of years of experience in material science with forming metals in other manners, and we've just started with additive engineering, so there's a lot of room for improvement. 1: [VIDEO]

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russdill · 2019-10 · Recommendation

Great Real Engineering video with a lot of discussion of the issues with material properties, crystalline structure, and fatigue cracks related to metalized 3d printing: [VIDEO]

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