What will happen if we perform annealing on a solution treated aluminium lithium alloy?

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Chandan Mondal

Insufficient info to start with.... what is the alloy? temperature of annealing with a range of 150oC!!! there will be hardly any correspondence between the lower end and the higher end..... Can't understand what is your target!

A broad guess will the following: Assuming that you have provided sufficient time for natural aging (i.e., T4), you are likely to have very fine precipitation of delta prime. If you start annealing in that range, at the lower end you will have rapid precipitate coarsening and as you increase the annealing temperature they will tend to dissolve back into the matrix.

You could do a DSC scan to get precise information on the precipitation reactions (i.e., formation and dissolution) for your system. Then probably, you can plan your experiments in a more precise way.

Rahul Rakshit

The material 8090 has been provided sufficient time for natural aging. I have annealed the solution treated AA8090 alloy at a temperature of 350, 400 and 425 degree C for 1 hour. Chandan Mondal

Still didn't understand the purpose.... why do you want to anneal a solution heat treated alloy?