[TheForge] Welding 5160

[Thomas A. Troszak]

Dear Grant,

Brilliant, clear explanation, thank you! It is odd to think of these
elements going into and out of solution when the material is still in a
solid state, but, by gosh, that's what happens.

I only have one more question:
you wrote:
 
> Hardening is the transformation of austenite to martensite upon quench,
> be it air or liquid.

If this quenching transformation is arrested halfway, that must be the
origin of "Austen-Marten" steel, the kind used to make British cars...
Right? Right?

sorry, couldn't resist.  :)

Thanks again,

Tom Troszak