no
as I understand grain size, NOT quenching is the key
let it cool as slowly as possible
you are after larger grain size
don't waste your time lapping it before annealing, it will 'move'
some info
http://www.key-to-metals.com/ViewArticle.asp?ID=25
http://innovations.copper.org/metall...etallurgy.html
http://www.completemetalworks.com/defs%5Cdefq.html (see second item - ??, not sure I agree)
http://www.asia.copper.org/acic/faqs_body.html
from above "What effect does heavy cold working have on the electrical conductivity of copper? It reduces by about 3%."
http://www.public.asu.edu/~jtsasu/ece350/Topic6.htm
"Excess vacancies may be introduced by quenching from high temperature, mechanical deformation, neutron irradiation."
a 3% change in conductivity is going to be a bit difficult to measure