Re: amorphous metals

From: Seth Imhoff (sdimhoff_at_wisc.edu)
Date: 06/21/04 

Date: Sun, 20 Jun 2004 22:07:44 -0500

C.D. Graham wrote:
> If you can draw it into wire, it will still be amorphous. Amorphous metals are generally hard and strong, probably difficult
> to draw. Also you need to avoid heating, since heating causes crystallization and this generally gives a very brittle
> material. My experience is with the first-generation amorphous alloys, which can only be made in thin ribbons or very fine
> wires. The wires can be drawn to smaller diameters. I have no experience with the newer amorphpous alloys that can be made in
> diameters up to maybe an inch or so, but I would expect them to behave similarly.

Although I can not say whether or not drawing the amorphous material
into wire would directly induce crystallization, I do know that you
would have to be very careful in terms of work put into the material.
Many amorphous materials can devitrify at relativly low temperatures
and during cold working. Much like C.D. Graham, I can not comment on
the ever growing number of new alloys, but I do know that you have to be
very careful about letting any energy stay within the amorphous structure.

Seth

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