[TheForge] Re: Test mail

[Chris Kilpatrick]

Two different mechanisms here, one refines the grain at just under forging temp.  the other pins edge slip dislocations, causing embrittlement and extreme loss of ductility.

-Chris K.

----- Original Message -----
From: "Grover Richardson" <grover.richardson at gtri.gatech.edu>
To: "'Sponsored by ABANA'" <theforge at mailman.qth.net>
Subject: RE: [TheForge] Re: Test mail
Date: Fri, 11 Nov 2005 08:02:55 -0500

> 
> 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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It is I who formed the blacksmith, 
who fans the flame into a fire and
fashions a weapon fit for it's work.


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