[TheForge] Re: Test mail

[Grover Richardson]

AKA work hardening.  Copper based metals do it also.

>*>-----Original Message-----
>*>From: theforge-bounces at mailman.qth.net 
>*>[mailto:theforge-bounces at mailman.qth.net] On Behalf Of Stephen Viola
>*>Sent: Friday, November 11, 2005 2:25 AM
>*>To: Sponsored by ABANA
>*>Subject: Re: [TheForge] Re: Test mail
>*>
>*>
>*>I'm not sure about the scientific detail, but I do know that 
>*>way back when, the making of springs for buggies and 
>*>carriages were hammered hard and not heat treated. So there 
>*>must be some truth to the compacting of grain or atoms. 
>*>Blacksmiths have been doing it for centuries. At college we 
>*>are taught that the compression of atoms occur when 
>*>hammered. Thats not to say that other material is displaced, 
>*>just that there seems to be some kind of allowance for the 
>*>metal to become harder with the compression. Like I said I 
>*>don't know the scientific blah blah, but thats the 
>*>understanding I have.
>*>
>*>Stephen (Finland)
>*>
>*>On 11/11/05, Erik Gutfeldt <erikg at apple.com> wrote:
>*>>
>*>> On Oct 31, 2005, at 4:59 AM, Bruce Freeman wrote:
>*>>
>*>> > I do vaguely remember his discussion about "packing the 
>*>edge" of a 
>*>> > knife.  Pure nonsense.
>*>>
>*>> I thought the metallurgical effect of "packing" was to 
>*>reduce grain 
>*>> size.
>*>>
>*>> Erik
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