Home /
T.O.C.
FAQs
 
Good
Books
Ref.
Libr.
Advertise
Here
Help
Wanted
Current
Q&A's
Search 🔍
the Site

Chime right in! (no registration req'd)

-----

"Information on AA5086 Aluminium"



2000

Hi, I'm an engineering student in NUS and I'm encountering some problems for my project. Can anyone help me with this question?

What is the composition of AA 5086 Aluminium? Trays made from AA5086 aluminium alloy are used to hold disk drives, which are then heat-treated at 150 °C for 2 hours by heating the trays. The aluminium alloy trays are manufactured by rolling, followed by heat treatment to give a well-defined, equiaxed grain structure. In an effort to save cost, the aluminium trays are bought in the as-rolled condition,without heat-treatment. However, when the trays are put in service,almost half of the disk drives fail after the heat treatment. Suggest a reason for the high failure rate of the disk drives and possible remedial measures.

Mr Ng
- Singapore
^


2001

The chemical composition(wt%) of AA 5086 alloy is as follows:--

Si-0.4, Fe-0.5, Cu-0.1, Mn-0.2/0.7, Mg-3.5/4.5, Zn-0.25, Cr-0.05/0.25, Ti-0.15, Al-remainder.

Generally, the 1xxx,3xxx & 5xxx series wrought alloys do not respond to strengthening by heat treatment. Strength for these alloys are developed by strain hardening, usually by cold working, e.g., rolling during fabrication. The heat treatment you mentioned is a low temperature annealing process for recrystallisation, recovery & grain growth.

Regarding the failure of the disk drives, what type and mode of failure are they? Any surface pretreatment done on the trays after the heat treatment?

Best Regards,

Wong Soon Hing
- Singapore
^


2001

I am an engineering student in Trinity college in Dublin, I study fatigue on welded joints for my thesis. I need to know the plain fatigue limit and the threshold value for welded specimen of AA 5086 Aluminium. I know that is very difficult but I hope someone can help me for example indicating to me some good web-sites where I could find these informations.

Thanks a lot for your availability, best regards

Giuseppe Crupi
Trinity College Dublin - Dublin, Ireland, Europe
^


2006

Hi guys!
I am a postgraduate student of the University of Manchester. I need information for a pending course work and I will be happy if someone assisted me. Please can AA5086 alloy be used for marine applications. If ''Yes'' or ''No'' please give your reasons

Eugene Ogosi
University of Manchester - Manchester, Lancashire and United Kingdom
^

none
finishing.com is made possible by ...
this text gets replaced with bannerText
spacer gets replaced with bannerImages

Q, A, or Comment on THIS thread SEARCH for Threads about ... My Topic Not Found: Start NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories:

 
Jobshops
Capital
Equipment
Chemicals &
Consumables
Consult'g, Train'g
& Software


About/Contact    -    Privacy Policy    -    ©1995-2021 finishing.com, Pine Beach, New Jersey, USA