World-First 'Super Alloy' Could Transform the Way Metals Are Made
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Re: World-First 'Super Alloy' Could Transform the Way Metals Are Made
#2Interesting for products where the resulting alloy just needs machining - lathing, milling, drilling etc, but more interesting will be what processes will be needed to weld or form such alloyed metals.
Re: World-First 'Super Alloy' Could Transform the Way Metals Are Made
#3Interesting for products where the resulting alloy just needs machining - lathing, milling, drilling etc, but more interesting will be what processes will be needed to weld or form such alloyed metals.
Existing high-strength alloys like MP35N are already extraordinarily difficult to machine. The "super alloy" in the story is said to have a compressive yield strength of 2 gigapascals, which is about MP35N tensile yield. Sounds like this "super alloy" isn't that much stronger than existing high strength alloys. It does have some fairly exotic alloying elements, tantalum, niobium and hafnium that probably don't come cheap. This super alloy will be used only in a very few applications.
Re: World-First 'Super Alloy' Could Transform the Way Metals Are Made
#4Presumably, some initial information was fed into the start of this reporting process. Multiple stages of this process had near-total incomprehension of the information yet performed full ingestion and reconstitution of it anyway, leading to this terminally-confused output.
Re: World-First 'Super Alloy' Could Transform the Way Metals Are Made
#5Interesting for products where the resulting alloy just needs machining - lathing, milling, drilling etc, but more interesting will be what processes will be needed to weld or form such alloyed metals.
Existing high-strength alloys like MP35N are already extraordinarily difficult to machine. The "super alloy" in the story is said to have a compressive yield strength of 2 gigapascals, which is about MP35N tensile yield. Sounds like this "super alloy" isn't that much stronger than existing high strength alloys. It does have some fairly exotic alloying elements, tantalum, niobium and hafnium that probably don't come c…
I have not struck MP35N afaik before, and interesting to see its use in commercial settings, and even available as bolts and nuts. Certainly not fun to machine [1]
It's hard to know just how much stronger this new processing of the alloy is than other common high strength alloys, as they list compressive yield and not tensile yield strength ... that's if the person writing didn't get the two terms confused.
As a note, I use duckduckgo and smirked somewhat at its search assist results for the few efforts to find the compressive yield of Bisalloy 400 (something I've had to drill) - checking out the listed sources it was clear it had mistakenly used the tensile yield ...
As an illustration for the differences, I found a page [2] for 4140 alloy and similar yield strengths. 4140 is reasonably workable, drilling isn't the greatest amount of effort either before it's tempered and annealed.
[1] https://www.practicalmachinist.com/forum/threads/milling-mp3...
[2] https://amesweb.info/Materials/Steel-Tensile-Yield-Strength-...
Re: World-First 'Super Alloy' Could Transform the Way Metals Are Made
#6Now all we need to do is build an invincible giant robot out of it, to protect peace and justice from the forces of evil.
Re: World-First 'Super Alloy' Could Transform the Way Metals Are Made
#7Presumably, some initial information was fed into the start of this reporting process. Multiple stages of this process had near-total incomprehension of the information yet performed full ingestion and reconstitution of it anyway, leading to this terminally-confused output.
I have to agree. It doesn't explain what a super alloy is or why this one is interesting. Fortunately it does link to the paper, https://doi.org/10.1126/science.aec4995 Also I'm not sure why Science Daily calls it the first, since there are others: https://en.wikipedia.org/wiki/Superalloy#Applications
Re: World-First 'Super Alloy' Could Transform the Way Metals Are Made
#8This is really cool metallurgy. They start with an alloy and deform it and because of elemental size mismatch they can cause the alloy to self assemble into nanoscale crystals with three different structures
The paper: https://www.science.org/doi/10.1126/science.aec4995
As an aside, “super alloy” is not the best wording choice on the part of the author of this sciencealert article, superalloys are an established alloy family that follow a different design strategy and have a very different composition profile https://en.wikipedia.org/wiki/Superalloy
Re: World-First 'Super Alloy' Could Transform the Way Metals Are Made
#9So Gundarium alloy is getting closer to reality?
Re: World-First 'Super Alloy' Could Transform the Way Metals Are Made
#10Presumably, some initial information was fed into the start of this reporting process. Multiple stages of this process had near-total incomprehension of the information yet performed full ingestion and reconstitution of it anyway, leading to this terminally-confused output.
I have to agree. It doesn't explain what a super alloy is or why this one is interesting. Fortunately it does link to the paper, https://doi.org/10.1126/science.aec4995 Also I'm not sure why Science Daily calls it the first, since there are others: https://en.wikipedia.org/wiki/Superalloy#Applications
The science daily article is just incorrect to call this a superalloy, which it is not. This is a high entropy refractory alloy (HfNbTaTiZr), superalloys are usually based on lighter metals and they usually have only one dominant element while HEAs have 4+ dominant elements