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Weld Process for 2024 and 7075 Aluminum

Weld Process for 2024 and 7075 Aluminum

Weld Process for 2024 and 7075 Aluminum

(OP)
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.

RE: Weld Process for 2024 and 7075 Aluminum

plane:
Contact the good people at 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 (www.lincolnelectric.com) and please post your results.

RE: Weld Process for 2024 and 7075 Aluminum

(OP)
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.

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