[TheForge] tempering aluminum

[Justin Fellenz]

Does anyone know about how to re-temper aluminum? I know very little about how aluminum works beyond how to anneal it to make it soft and to forge when hardwood leaves a skidmark. But I was thinking about whether it would be possible to build a motorcycle swingarm (I'm thinking a swoopy single-sided job) by hammerforming a three-sided shape hot and then welding in internal bracing and the fourht side to make a box. But then it would  be annealed, and I suspect that it should be a good springy temper. T-6 seems to be the common one.
   
  Really airing out my ignorance here, but none of my books have anything on this. 
   
  Thanks,
   
  JRF