×
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

Casting materials cracking problems due to thermal stress

Casting materials cracking problems due to thermal stress

Casting materials cracking problems due to thermal stress

(OP)
I am doing some R&D work using cast iron as a high temperature heat store and cycling it between 800-100 deg.C.

Naturally cracking occurs, I assume due to thermal stresses and low UTS of cast iron.

Would anyone have an opinion on the merits of using cast steel or bronze as an alternative to avoid this cracking problem?


Thanks

RE: Casting materials cracking problems due to thermal stress

You might try ductile cast iron too. But yes, something with a bit more ductility and fewer stress risers (graphite flakes) than grey iron.

RE: Casting materials cracking problems due to thermal stress

Did you consider Compacted Graphite Irons. They are better suited for thermal cycling applications.

_____________________________________
"It's better to die standing than live your whole life on the knees" by Peter Mayle in his book A Good Year

RE: Casting materials cracking problems due to thermal stress

High SiMo ductile iron is widely used in automotive exhaust applications and may be suitable.

RE: Casting materials cracking problems due to thermal stress

Why use a solid? Most heat stores use something that transitions between phases as you can store much more energy.

----------------------------------------

The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.

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