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Propeller Head Plaza Technical and scientific discussion of amps, cables and other topics. |
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Propeller Head Plaza Technical and scientific discussion of amps, cables and other topics. |
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In Reply to: Re: Cryo Experience posted by audioengr on December 4, 2002 at 12:05:09:
""Changing the Lattice structure does not necessarily result in an improvement. Depends on how you change it""Agreed.
""In general, if the structure is more orderly, the electrical performance should be better.""
Although this seems common sense, I've not seen data to support that on silver wires, or copper wires. Just anecdotal evidence.
""The improvement in tensile strength for steel that is cryo treated comes because you have jumbled the lattice""
The transformation from FFC to BCT lattice structure within steel is temperature dependent. At room temperature, the process stops due to surface energy and lattice energy. Dropping the temperature makes the BCT lattice configuration preferred, producing more martensite.
""much like what happens when you bend steel""
Work hardening is a different effect from cryo-induced BCT martensite formation.
""Eventually it becomes so hard that it fractures.""
It's not the hardness that does it, it's the formation of stress concentrators, which cause the formation of cracks at boundaries.
Cheers, John
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- Re: Cryo Experience - John Escallier 16:57:16 12/05/02 (0)
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