Hi Bill,
You got good memory--problem of course is that the two of us are likely among
the oldest TechNetters. In that paper it was also reported that having fine
grain structure increased fatigue life by a factor of 2 to 3. Problem is, that
this is true for accelerated reliabiliity testing, not for product, because
grain structure coarsens with time, tamperature, and stress so that after 18
months in the field you can not tell the difference.



Werner Engelmaier

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