Comments on: MIT grad students achieve long-sought stable nanocrystalline metals http://www.kurzweilai.net/mit-grad-students-achieve-long-sought-stable-nanocrystalline-metals Accelerating Intelligence Tue, 18 Jun 2013 23:40:16 +0000 hourly 1 http://wordpress.org/?v=3.4.1 By: Lord Penguin http://www.kurzweilai.net/mit-grad-students-achieve-long-sought-stable-nanocrystalline-metals/comment-page-1#comment-29558 Lord Penguin Sun, 26 Aug 2012 00:46:34 +0000 http://www.kurzweilai.net/?p=160271#comment-29558 The main difference is that amorphous metals are a glass, so they lose their structural properties to heat and begin to flow (which is useful, but not for the same things as the metals described above), whereas nanocrystaline metals are designed to withstand extreme temperatures without losing structural stability. The main difference is that amorphous metals are a glass, so they lose their structural properties to heat and begin to flow (which is useful, but not for the same things as the metals described above), whereas nanocrystaline metals are designed to withstand extreme temperatures without losing structural stability.

]]> By: Bri http://www.kurzweilai.net/mit-grad-students-achieve-long-sought-stable-nanocrystalline-metals/comment-page-1#comment-29553 Bri Sat, 25 Aug 2012 20:44:16 +0000 http://www.kurzweilai.net/?p=160271#comment-29553 Thanks starO! That's a great link! Everyone should check out nano cellulose! What amazing properties it has. Stronger and lighter than kelvar. Totally biocompatable. An endless list of desirable attributes. Not to mention renewable. It could be used in a 3d printer format. Just truly amazing! Thanks starO! That’s a great link! Everyone should check out nano cellulose! What amazing properties it has. Stronger and lighter than kelvar. Totally biocompatable. An endless list of desirable attributes. Not to mention renewable. It could be used in a 3d printer format. Just truly amazing!

]]> By: Bri http://www.kurzweilai.net/mit-grad-students-achieve-long-sought-stable-nanocrystalline-metals/comment-page-1#comment-29550 Bri Sat, 25 Aug 2012 20:12:49 +0000 http://www.kurzweilai.net/?p=160271#comment-29550 I think the article is referring to amorphous metals in the statements about crystals growing larger under stress and heat. I think the article is referring to amorphous metals in the statements about crystals growing larger under stress and heat.

]]> By: Mr.x http://www.kurzweilai.net/mit-grad-students-achieve-long-sought-stable-nanocrystalline-metals/comment-page-1#comment-29547 Mr.x Sat, 25 Aug 2012 19:14:11 +0000 http://www.kurzweilai.net/?p=160271#comment-29547 That depends partly on regulation.There are some people who could get to be quite dangerous with those printers.I am not saying that this is my position, but I guess many governments would rather keep that technology to themselves. That depends partly on regulation.There are some people who could get to be quite dangerous with those printers.I am not saying that this is my position, but I guess many governments would rather keep that technology to themselves.

]]> By: billyswong http://www.kurzweilai.net/mit-grad-students-achieve-long-sought-stable-nanocrystalline-metals/comment-page-1#comment-29530 billyswong Sat, 25 Aug 2012 15:02:11 +0000 http://www.kurzweilai.net/?p=160271#comment-29530 3d printing for metal has the issue of unreliable strength and unpredictable defect until after printed. Such nanoscrystalline structure could make the printing process a lot more reliable. 3d printing for metal has the issue of unreliable strength and unpredictable defect until after printed. Such nanoscrystalline structure could make the printing process a lot more reliable.

]]> By: Arthur B. http://www.kurzweilai.net/mit-grad-students-achieve-long-sought-stable-nanocrystalline-metals/comment-page-1#comment-29407 Arthur B. Fri, 24 Aug 2012 14:17:16 +0000 http://www.kurzweilai.net/?p=160271#comment-29407 Anyone knowledgeable enough to explain how this is different from / preferable to amorphous metal ? http://en.wikipedia.org/wiki/Amorphous_metal Anyone knowledgeable enough to explain how this is different from / preferable to amorphous metal ? http://en.wikipedia.org/wiki/Amorphous_metal

]]> By: Gorden Russell http://www.kurzweilai.net/mit-grad-students-achieve-long-sought-stable-nanocrystalline-metals/comment-page-1#comment-29406 Gorden Russell Fri, 24 Aug 2012 14:10:10 +0000 http://www.kurzweilai.net/?p=160271#comment-29406 When the day comes that 3D printers can print more 3D printers, then everybody who wants one can have one. People who are laid off by automation can use their unemployment checks to start their own business making one-off copies of needful things...maybe like parts for a 1957 Studebaker. When the day comes that 3D printers can print more 3D printers, then everybody who wants one can have one. People who are laid off by automation can use their unemployment checks to start their own business making one-off copies of needful things…maybe like parts for a 1957 Studebaker.

]]> By: star0 http://www.kurzweilai.net/mit-grad-students-achieve-long-sought-stable-nanocrystalline-metals/comment-page-1#comment-29405 star0 Fri, 24 Aug 2012 14:07:17 +0000 http://www.kurzweilai.net/?p=160271#comment-29405 Check out nanocellulose: http://www.newscientist.com/article/mg21528786.100-why-wood-pulp-is-worlds-new-wonder-material.html It's one of the most amazing materials I've read about, and may even replace metals in cars and airplanes at some point. It is predicted to contribute 600 billion -- that "billion" with a "b" -- to the U.S. economy by 2020, according to this article: http://blogs.usda.gov/2012/08/03/usda-under-secretary-sherman-unveils-nanocellulose-production-facility/ Check out nanocellulose:

http://www.newscientist.com/article/mg21528786.100-why-wood-pulp-is-worlds-new-wonder-material.html

It’s one of the most amazing materials I’ve read about, and may even replace metals in cars and airplanes at some point. It is predicted to contribute 600 billion — that “billion” with a “b” — to the U.S. economy by 2020, according to this article:

http://blogs.usda.gov/2012/08/03/usda-under-secretary-sherman-unveils-nanocellulose-production-facility/

]]> By: Gorden Russell http://www.kurzweilai.net/mit-grad-students-achieve-long-sought-stable-nanocrystalline-metals/comment-page-1#comment-29404 Gorden Russell Fri, 24 Aug 2012 14:06:30 +0000 http://www.kurzweilai.net/?p=160271#comment-29404 Sure would like to see the video when they fire an anti-tank shell at a plate of this tungsten-titanium alloy. Sure would like to see the video when they fire an anti-tank shell at a plate of this tungsten-titanium alloy.

]]> By: Bri http://www.kurzweilai.net/mit-grad-students-achieve-long-sought-stable-nanocrystalline-metals/comment-page-1#comment-29385 Bri Fri, 24 Aug 2012 12:12:17 +0000 http://www.kurzweilai.net/?p=160271#comment-29385 Sintering means that the same techniques used in 3D printing will be applicable to those compounds. In other words you could print an aircraft engine at home. Sintering means that the same techniques used in 3D printing will be applicable to those compounds. In other words you could print an aircraft engine at home.

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