jl2021
Mechanical
- Aug 16, 2021
- 1
I'm running room temperature tensile tests (ASTM E345-16) on 25um, 50um, and 75um H19 Al1100 foils before and after going through a relatively mild 1 hour @ 160C thermal treatment. As expected, there's a small decrease in strength (similar to the "Recovery" section here: BUT elongation is dropping from 3% to <1.5%! I've not been able to find any explanation or observation of this behavior in literature and I can't find any problems with my test or sample prep. Heating to 300C still results in expected annealing behavior.
Is anyone familiar with this type of behavior in foils and willing to share some insight or point me in the right direction? My application will need to withstand short durations at 160C so this could have a large impact on our design.
Thank You!
Is anyone familiar with this type of behavior in foils and willing to share some insight or point me in the right direction? My application will need to withstand short durations at 160C so this could have a large impact on our design.
Thank You!