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Amorphous Steel

pfdietz writes "Researchers at Oak Ridge have achieved a holy grail of materials science: they have figured out how to produce amorphous (glassy) steel. The material is reported to be twice as hard and have twice the tensile strength of the strongest ultra-high tensile strength steel alloy."

15 of 110 comments (clear)

  1. Transparent steel-w00t! by Anonymous Coward · · Score: 4, Funny
    Somebody make a theme for Linux with it before Apple patents it and starts sending DMCA threats!!!

    Posting anonymously to protect my karma from Apple zealots.

  2. How Long Will It Be ... by tilleyrw · · Score: 3, Funny

    before the nanotechnologists are able to reproduce this material an the atomic scale and essentially "grow" amorphous-steel items?

    I want my +5 Broadsword of Nerdly Might!

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  3. Somebody explain this to me? by orthogonal · · Score: 5, Interesting
    From the linked article: Steel, an alloy of mostly iron atoms with varying amounts of carbon and other elements, is ordinarily a crystal, with an internal structure consisting of neat rows of atoms. If produced quickly from a liquid phase, however, a disordered solid can result.

    Ok, somebody who understands materials science explain this to me, please: is the amorphous steel's hardness and strength greater because the non-amorphous, crystalline steel breaks easily along a row of atoms, as if along a perforation, while the amorphous steel, lacking such an orderly structure, lacks long runs of bonds along which breaks can be easily made?

    Pictorially, is it like this?
    Fe-Fe-Fe-Fe regular, non-amorphous steel
    |..|..|..| <--- break along this line
    Fe-Fe-Fe-Fe

    Fe-..-Fe-.-Fe amorphous steel
    |.\-Fe-Fe/.| <--- no natural breaking line
    Fe-Fe-Fe..-Fe
    1. Re:Somebody explain this to me? by iwadasn · · Score: 4, Insightful

      That should be more or less correct. If it's like other amorphous things though it should be harder, right up until you reach the point of catastrophic failure where it will shatter.

    2. Re:Somebody explain this to me? by mprinkey · · Score: 5, Informative

      In any crystal, there are potential imperfection. The MatSci term for them is dislocations. These are holes in the crystal lattice. These holes can move around (think of piles of marbles). In single crystals, these dislocations lead to stress risers at the hole (try tearing a sheet of paper by just pulling at opposite ends...then tear a small notch in the middle of one edge and try again). So these dislocations can move around and basically "unzip" the whole crystal. The failure mode leads to "cleaving" planes along different directions in the crystal and makes the bulk strength much lower.

      High strength alloys generally try to put extra chemicals in the metal mixture to block the movements of the dislocations. Also, you tend to "quench" the formed metal so that the crystals that it forms (called "grains") are small. Smaller grains usually means stronger metals because they can only "unzip" a short distance before they hit a different grain with a different orientation.

      These guys at ORNL have basically taken the tiny grain idea to the ultimate limit. Each grain basically only has one or a few atoms in it. FYI, IAA Mech. Engineeer.

    3. Re:Somebody explain this to me? by furry_marmot · · Score: 5, Interesting
      There was an article in Discover magazine just a couple of months ago about this very thing. Not sure if it's online, but you can definitely find it at your local library.

      One thing worth noting: While the tensile strength is increased greatly, it is also glass-like in that if you hit it with a baseball bat, it explodes in lots of little shards. It has to do with the lack of a lattice structure keeping it together.

      Another thing I thought was interesting: steel knives sort of shed molecules and become deformed at the knife-edge when you use them, requiring you to sharpen them. Glassy steel knives wouldn't do this. You could literally pour yourself a knife in a mold and have a never-dulling knife -- assuming you don't drop it. :-)

  4. Some metals they might find next (?) by xmas2003 · · Score: 5, Informative
    From this page (mirrored here so they don't get /'ed) ... no mention of Unobtainium! ;-)

    BTW, if you can't get a gmail invite from the poster above, they are giving one away periodically from the bottom of this Google Compute page.

    There are several special metals in the Marvel universe that can have a place in the World of Darkness. These metals are usually very hard; much harder than mere steel, and they are not very ablative. They are also very rare, in general. One or two of them have special properties.

    Adamantium

    Adamantium is the hardest metal known to man, though it has not been made clear how dense it is. One would suspect that its density is roughly the same as that of normal steel, though a Storyteller can rule that it is as heavy as lead or as light as magnesium. At any rate, it would appear that no force on earth is sufficient to break or bend adamantium when it is at a normal temperature. Wolverine has used his adamantium-coated claws in Arctic climes as well as steamy jungles, so there is no reason to suppose that the metal becomes brittle at low temperatures. Judging from the number of times Wolverine's flesh has been roasted or vaporized right off of his skeleton in the comics, with no visible effect on the metal, we must assume that adamantium has a relatively high melting point. In any case, to be nice to Logan, it also seems likely that it has a fairly high specific heat capacity, at least for a metal. It may or may not be one of the magnetic metals- as seen in X-Men 25- because Magneto has enough raw power to reach down and repel protons in the raw, if he wants to.

    There is a special process that allows adamantium in ionic (salt) form to be bonded to human bones- as in Wolverine's skeleton- or even human skin- as in Cyber's case. This process was developed by a Japanese scientist and villain called Dark Wind, and stolen (or sold) for the benefit of Department H, a branch of the Canadian Ministry of Defense. The following characters have some sort of connection to the metal, or are actually running around wearing it: Wolverine, Cyber, Dark Wind, Apocalypse, the Professor (not Xavier), Ultron, Lady Deathstrike.

    Carbonadium

    Carbonadium is a resilient, unstable metal that is much tougher than steel but more flexible than adamantium. It would seem as though it is a difficult and extremely expensive process to make carbonadium, which is probably an alloy of some kind, since there is apparently only one carbonadium synthesizer in the entire world. Carbonadium, like its more resilient counterpart adamantium, would appear to have a high specific heat capacity and melting point.

    Carbonadium may or may not have one unique property: it may serve to stabilize a life-force vampire's condition, which would keep the mutant from having to drain the life force of others to survive. This may be a simple fact of Omega Red's condition, rather than something general to life-force vampirism.

    Omega Red's tentacles are composed of carbonadium, and it is possible that his skeleton is also laced with the stuff. Other characters with a link to carbonadium include Wolverine, Sabretooth, Maverick, and John Wraith.

    Omnium

    Omnium is an extremely hard, extremely rigid metal that is likely to be second in resilience only to adamantium. In any case, it would seem that it is even less likely to bend without snapping than that metal. Omnium is not a commonly used or mentioned metal, but it has appeared on rare occasion in Marvel comics.

    There was an acolyte of Magneto that had the power to change either himself or another person into an aware omnium statue. Other characters that have been seen using or testing the metal include Penance and the White

    --
    Hulk SMASH Celiac Disease
    1. Re:Some metals they might find next (?) by blankmange · · Score: 4, Funny

      You forgot terbinium, from Mars, which is mined using essentially slave labor and the resistance leader (Kuato) was murdered several years ago...

      --
      ...we are from the government - we are here to help...
    2. Re:Some metals they might find next (?) by pragma_x · · Score: 4, Funny

      Please allow me contribute some missing entries, frequently found in tabletop arenas:

      Unobtainium

      Unobtainium is the preferred material of fantasy weaponsmiths for creating arms and armor capable of great feats otherwise impossible by any other means or craft. Many a spell is also said to be enhanced just by the mere possession of the substance. In the far-flung future, it is used in every sector of industry from composing and fueling spacecraft, anti-gravity devices, matter-teleportation machines, polymorphing robots, slashdot-effect-proof web servers, faster-than-lightspeed engines, time travel, to making the construction of 100m tall walking war machines possible.

      There is even a rumor that a crash-proof version of Windows exists that requires a special CPU made of pure unobtainium.

      Despite its extreme usefulness, there is no known location in the universe where the substance can be mined or produced. Furthermore, there have yet to be any published studies regarding anything about the substance itself; yet there are thousands of studies and papers regarding its many applications.

      Deaminite (n. dee-em'-in-ite)

      Deaminite is typically found in the construction of mundane objects that are, for reasons unexplained, immobile, impossibly heavy, or otherwise indestructible. There are many a legend involving bands of heroes, who's quest came to halt all because of unlockable and unbreakable doors composed of deaminite. Known artifacts composed of deaminite include: the impossibly heavy weapons of the gods, armor worn by 40th level death knights, Jackie Chan's head, The outer hull of the starship Enterprise, and NYC cockroaches.

      Typically encounters with an object made from deaminite result in a loud booming voice, seemingly from nowhere, uttering phrases like "You cannot pick that up", "You cannot do that", "Its too heavy", "No, because I said so", and "You see a grue".

      Ironically, unlike unobtaininum, Deaminite has never actually be obtained for any purpose whatsoever, so its composition and properties are completely unkown.

  5. Further reading... by CodeMonkey4Hire · · Score: 3, Informative

    The article was a little thin, so I mosied on down to Wikipedia. I always get confused when I hear glassy, but it appears to be related to the material structure, not any transparency/translucency of the material.

    Apparently amorphous metals are considered by some scientists to be a type of liquid rather than a solid. Kind of like glass, if you look at an old house you can see that the windows have slowly flowed downward.

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    Let's go Hurricanes!!! 2006 Stanley Cup Champions!!!
    1. Re:Further reading... by Coos · · Score: 5, Informative
      Apparently amorphous metals are considered by some scientists to be a type of liquid rather than a solid. Kind of like glass, if you look at an old house you can see that the windows have slowly flowed downward.

      Urban Legend, or at least most of the way to being one. The observed thickness variation is due to the Crown glass process of making glass sheets in that period: it involved spinning out a 5ft diameter disc of glass, thick in the centre and thin at the edges, and cutting the rectangles from that. There are apparently as many panes thicker at the top or the sides as at the bottom, although possibly some glaziers did have a preference for putting 'thick edge down'.

      If glass did flow, extremely ancient (Myr) naturally occuring glasses like obsidian, fulgurites or tektites would have flowed into puddles! (they havent). Or if that doesnt convince you: the tolerances on the optical components of large telescopes are so fine that flow of the glass at the claimed rates would distort the image within days.

      See, for example, "Do Cathedral Glasses Flow?", Am. J. Phys. v66, pp 392-396, May, 1998

      NB. Glass can creep under loading, however - but thats for another thread.

    2. Re:Further reading... by Jahf · · Score: 5, Informative

      Glass flowing is a myth.

      Old glass manufacturing technics were VERY imprecise. You might end up with a pane that had a thicker edge, in which case you would naturally put it on the bottom for balance.

      Or you might end up with fairly uniform edges but have an irregular surface that looked like it was "flowing" but was static. I have picture windows in my house that are about 70 years old that have this "flow" pattern and have had people remark that the liquid must be pooling ... it's simply irregular hand-made glass.

      Even if glass -does- flow (see the "a" link at the beginning), math shows it would take millions of years to complete the process, meaning no glass made by man would yet show visible signs of deterioration.

      And you're right, "glassy" in this case is about the physical structure of the metal, not the light transmitting/absorbing aspects though those are probably mildly affected (I imagine a glassy steel will hold a shiny polish better than a crystal steel).

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  6. Two words... by berck · · Score: 5, Funny

    TRANSPARENT ALUMINUM!

    "Hello? computer?"

    "Just use the keyboard!"

  7. Re:Thank you very much! by Kevin+Burtch · · Score: 3, Interesting


    I used to work in a machine-shop, both in design and in purchasing (for several years).

    Reynolds and many others consider 6061 and 6063 to be marine-grade.

    They also consider 7075 to be aircraft grade... twice the shear and tensile strength of 6061, but also twice as expensive (cost/lb).

    The T-rating ("-T6") is a hardening that it receives after forming, irrelevant to the alloy.

    As far as what is spec-ed out, I agree... you should be able to use 6k series in an airplane, for example in a coffie-pot-holder.
    Oddly enough, we made a run of those for an airline, and they spec-ed it had to be 7075-T6.
    And people wonder why air-fare is so expensive... bozos are making the decisions.

    The reverse is true too... we made a run of bicycle crank-axles that were spec-ed to be 7075-T9! Hardly an airplane, but those puppies sure were expensive!

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  8. Re:Thank you ... by rco3 · · Score: 3, Informative

    "glassy", as in "amorphous", as in "non-crystalline". Does NOT mean transparent like window glass. Think obsidian - it's black (or green), opaque, and shatters in totally random directions. That's because it has no crystalline structure and thus no lines or planes of fracture.
    This is non-crystalline steel. It's not transparent aluminum - but then, nothing is.

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