Weld Process for 2024 and 7075 Aluminum

[planehack]

I am having difficulty finding a welding process for 2024 and 7075 aluminum. I understand that it is not advisable to weld the two types due to intergranular stress corrosion and brittlement issues. However, for a short term interim repair on nonload bearing structure it may prove acceptable. Any help on a published would be appreciated.

 

[CWIC]

plane:
Contact the good people at

http://www.alcotec.com

They are the aluminum welding experts IMHO. Lincoln is pretty good, but not as knowledgable as Alcotec IMHO again. I and a number of my clients have attended their Al welding seminars.

Typically, the GMAW or GTAW process are commonly used to join these materials.

I will not recommend a filler metal or electrode due to the following reasons:
*I don't know the the specific types of materials you are joining (you specified alloy designation only),
*don't know exactly what your application is,
*mixing these two alloys could be difficult.

Contact Alcotec or Lincoln Electric (

http://www.lincolnelectric.com)

and please post your results.

 

[planehack]

The part in question is 2024-T62 0.050” with a crack. I have cut some test plates from 2024-T3 0.071” and asked the weld shop to join the two test plates together using Alloy 2319 wire. I would have liked to have tried Alloy 4145 as well but it is unavailable. I will post the results of the findings and the process used later in the week. Thanks for the reference information. I will contact them for their input.