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!

*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.

Jobs

Fatigue data for cast aluminum alloy

Fatigue data for cast aluminum alloy

(OP)
Hello,

can somebody recommend a source of decent fatigue data (Woehler-chart) for cast aluminum (I need it particularly for Al Si10 Mg). It should go up to at least 1...5*10^7 cycles. Thanks in advance!

RE: Fatigue data for cast aluminum alloy

2
There are not many sources of information on fatigue strength of Al casting alloys, and certainly none I would call thorough or extensive.  Alloys used for aerospace applications (201, 356, 357) are covered in MIL-HDBK-5, Structural Alloys Handbook and Aerospace Structural Metals Handbook.  MIL-HDBK-5 is available from the US govt or from Granta and the other two are available from CINDAS.  Use the following links for more information:

http://assist2.daps.dla.mil/quicksearch/

http://www.grantadesign.com/cgi-bin/stat-tree.cgi?src=MIL5-H.xml&br=0

https://engineering.purdue.edu/IIES/CINDAS/Pubs_html

Obtaining anything other than generic data on industrial alloys like 360 (equivalent to Al Si10Mg) is difficult.  The die casting organizations (NADCA, etc.) and ASM Handbook Volume 2 provide fatigue strength data from rotating bending tests (R.R. Moore tests) usually at 5 x 108 cycles: for this alloy the data is 124-131 MPa.  An S-N curve that I obtained from Lanxide (aluminum composites) shows A360 (lower impurity levels) maximum stress levels at 10[sup7 cycles of ~ 60-70 MPa under R=-1 conditions (fully reveresed).  This data is more indicative of properties that can be obtained from production high pressure die castings, which will contain defects that suppress the fatigue life (entrapped gas porosity, filling defects, entrapped lubricant, etc.).  The ASM data is best case, and therefore not conservative.

You may be able to find additional data by performing a review of published journals, technical papers, etc.  The SAE Technical Paper series would be a good place to start, as well the research literature databases (Cambridge Scientific Abstracts, etc.).  Use the following links for more information:

http://www.sae.org

http://www.scirus.net

httP;//www.csa.com

RE: Fatigue data for cast aluminum alloy

(OP)
Thank you very much for your excellent and very helpful answer!

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


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close