In all research paper i found the Aluminium alloy D16AT and 2024T4 having same chemical composition . They are subjected to same heat treatment process. Are they different or same ???
Hello Mr. Verma! You are right, D16AT (GOST) and 2024T4 (ASTM Material Datasheet) have the identical chemical specification. As far as I know the aging kinetics vary due to the applied temperatures. Precipitations are going to be formed during the natural (T4) and accelerated aging (furnace), but on this type of microstructural properties I did not ocnduct any research. If you want to know if you deal with the right material, hardness tests should be a first idea. It depends on the field of usage, which material properties you really need. From a static point of view I guess you try to avoid TYS (limit of elasticity). BR Igor
Igor Milosevic Sir both materials are solution heat treated, then water quenched and then naturally aged . The D16AT is solution heat treated at temperature around 550 degree , then cold water quenched and naturally aged. For 2024 T4 the solution heat treatment temperature is 495 degree( if i am not wrong ) , then water quenched and then naturally aged. Just the temperature difference in solution heat treatment the only reason of difference for aging kinectics?
Basically yes. As I said, I'm not really sure what the aging does affect in the end. It seems that the precipitation characteristics are going to differ. Is the difference a critical factor for your study - I can't tell you that. If I were you, I would do some research about the heat treatment temperature and the effect on the precipitation result AND I would doublecheck my results (it depends what your tests look like) with other results from the literature. It depends on the analysis possibilities you have, but just be aware that you have to consider this difference. I would keep it in mind.
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