×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Weldability & strength

Weldability & strength

Weldability & strength

(OP)
Thanks in advance, group, for any help with this.

Q/1
I am finding conflicting opinion on the weldability of 7000 series aluminium alloys (in particular 7005). Older texts seem to say "not viable" and that it's "considered not structurally weldable in engineering circles". And yet empirical evidence belies that stance. Any thoughts, opinions, pointers much appreciated.

Q/2
I have it in the back of my mind that I once read that  steel alloys have been produced which are claimed to actually be stronger after the welding process. Again, any comments from those more experienced than myself would be appreciated.

Jon Weaving
www.gripsport.com.au

RE: Weldability & strength

Quote (grippy):

Q/1
I am finding conflicting opinion on the weldability of 7000 series aluminum alloys (in particular 7005). Older texts seem to say "not viable" and that it's "considered not structurally weldable in engineering circles". And yet empirical evidence belies that stance. Any thoughts, opinions, pointers much appreciated.

Reply;
Below is web site concerning the weldability of various aluminum alloys that might be of interest;


http://www.alcotec.com/techpage.htm

Quote (grippy):

Q/2
I have it in the back of my mind that I once read that  steel alloys have been produced which are claimed to actually be stronger after the welding process. Again, any comments from those more experienced than myself would be appreciated.

Reply;
No, this is not really an accurate statement. The weld ican be made stronger using higher strength steel weld metal but the heat from welding will always introduce a local region of weakness adjacent to the weld region in the base metal being joined. Fortunately, steels can be heat treated after welding to eliminate this local region of weakness. However, heat treatment after welding is not always possible or feasible.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources