Name: Tony G.
Can you demagnatize an 150 degree aluminium casting down to at least
90 degrees in a matter of seconds by using induction cooling?
If so, what type of demagnatizer needs to be used?
Aluminum is not a magnetic metal, so not much would happen I don't think,
except maybe generating some eddy currents.
You can find out about a related topic by searching the term: "adiabatic
demagnetization" on the Web. or "W.F. Giauque" who won the Nobel prize in
1948 for perfecting the technique for producing temperatures less than 1 K.
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Update: June 2012