stress relieving al alloy 5083 'o'
stress relieving al alloy 5083 'o'
(OP)
i need to stress relieve a part manufactured from aluminium alloy 5083 type 'o'. i am struggling to find any information about temperature and duration required.
Can anyone help or recommend a suitable website with the information on.
many thanks
Can anyone help or recommend a suitable website with the information on.
many thanks





RE: stress relieving al alloy 5083 'o'
Regards,
Cory
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.
RE: stress relieving al alloy 5083 'o'
the part is machined from 5083 type 'o' 'fully annealed' and i wish to stress relieve after machining not anneal it.
regards
ant
RE: stress relieving al alloy 5083 'o'
Don’t use a radiant heat (elements exposed) oven.
RE: stress relieving al alloy 5083 'o'
i presume that what you are saying will return the material to its original state after machining?
the part is not plate it is a machined billet(quite large) that is then going to be formed. i want to stress relieve it prior to forming.
ant
RE: stress relieving al alloy 5083 'o'
If you have done any secondary forming work on the block after it was brought to “O” temper, yes I would partially anneal it prior to machining.
You may want to do an intermediate "partial stress relief" after your rough in the part. This may or may not be necessary depending on the amount of hardening (strain) that is done by machining. With the proper tooling this should not be a problem unless you have thin sections.
The aircraft industry and others get by machining Al with very high speed ridged machines.
RE: stress relieving al alloy 5083 'o'
To stress relieve your 5083 parts you can use sub-harmonic stress relief IF your intended goal is limited to one of three reasons: 1. distortion control following machining, 2. reduce delayed distortion, or 3. reduce premature fatigue. This sub-harmonic process should not be used to try to alter the "T" condition of the part or to try to straighten a distorted part.
The website that you can learn more about the process is www.meta-lax.com.
You can virtually use this sub-harmonic process any time since there is no treatment distortion or alteration of the material's mechanical properties. But this process is strictly a preventative mfg. step. Once the distortion is already there, it's too late.
Best of Luck
BTI Guy