It might already be a good idea to subject the base material itself to the bend test, using the same former diameter as the one you use for the weld... If fracture doesn't occur in the base material (if it does, then your base material supplier has a problem I guess), then you can try the following:
* Perform bend testing using the wrap-around test
* "Guide" the bend test: machine 2 6082-T6 base material samples up to the same dimensions as the welded pieces. Place the welded pieces between the base material samples, and apply a lubricant between them. Adapt your former diameter and distance between the supporting rollers accordingly. Do the test - this way, you should avoid excessive localised deformation in the HAZ.
That should do the trick. By all means, you should check whether this approach is acceptable by your clients.
Kind regards,
Wim Van Haver
Belgian Welding Institute
--- On Tue, 2/2/10, Elshan Feyzullayev <elshan_f@hotmail.com> wrote:
> From: Elshan Feyzullayev <elshan_f@hotmail.com>
> Subject: RE: [MW:4194] Welding of Aluminum plate grade 6082 T
> To: materials-welding@googlegroups.com
> Date: Tuesday, February 2, 2010, 11:33 PM
>
>
>
>
>
> we are using a normal bend test method where we do the same
> on carbon steel.
>
> the fracture is in the HAZ. so, even when you
> start bending it, it is broken straightway.
>
>
>
> i would like to get more info about the changing of bend
> test methods.
>
>
>
> best regards,
>
>
>
> > Date: Tue, 2 Feb 2010 22:28:33 -0800
> > From: wimvanhaver@yahoo.com
> > Subject: Re: [MW:4193] Welding of Aluminum plate grade
> 6082 T
> > To: materials-welding@googlegroups.com
> >
> > Dear Mr. Feyzullayev,
> >
> > Where does the fracture take place? In the weld metal
> or in the heat affected zone? Which kind of bend test are
> you using: three-point bend testing or wrap-around?
> > If fracture takes place in the heat affected zone and
> you are using three-point bend testing: we have also had
> some experience with this in the past. Due to the severely
> softened zones in the HAZ, all deformation tends to take
> place in the HAZ. This produces a virtual former diameter
> which is significantly smaller than the actual former
> diameter. A solution to that might be to change your bend
> testing method (in agreement with your client, of course).
> Please let me know if you require more details about this.
> >
> > Kind regards,
> >
> > Wim Van Haver
> > Belgian Welding Institute
> >
> > --- On Tue, 2/2/10, Elshan Feyzullayev
> <elshan_f@hotmail.com> wrote:
> >
> > > From: Elshan Feyzullayev
> <elshan_f@hotmail.com>
> > > Subject: [MW:4186] Welding of Aluminum plate
> grade 6082 T
> > > To: materials-welding@googlegroups.com
> > > Date: Tuesday, February 2, 2010, 3:55 AM
> > >
> > >
> > >
> > >
> > >
> > > Dear friends,
> > >
> > >
> > >
> > > I need to run the new WPSin Aluminium steel
> plate
> > > using the attached grade of Aluminum plate.
> > >
> > >
> > >
> > > How many times I have tried but I can not get
> the
> > > acceptable results from bend test.
> > >
> > >
> > >
> > > It is broken after slight bending.
> > >
> > >
> > >
> > > Can you help me please how to weld it to get the
> acceptable
> > > results from bending?
> > >
> > >
> > >
> > > The wire I am using is ER5356 which is
> reccommended for
> > > this type of AL.
> > >
> > >
> > >
> > > Best regards,
> > >
> > > Hotmail: Powerful Free email with
> > > security by Microsoft. Get it
> > > now.
> > >
> > >
> > >
> > >
> > > --
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> > > personel views and meant for educational purposes
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> > >
> > >
> >
> >
> >
> >
> > --
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> The views expressed/exchnaged in this group are members
> personel views and meant for educational purposes only,
> Users must take their own decisions w.r.t. applicable
> code/standard/contract documents.
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