I'm preparing myself for the coming examination and I think I've heard that bcc-materials (steels) have a fatigue stress limit whilst fcc-materials (aluminium) doesn't.
But I can't find any documentation for that!
A lot of places on google says that carbon steels have a fatigue limit and aluminium alloys doesn't. But does it have anything to do with the crystal structues?
I know that the crystal structure has an effect on the impact strength at lower temperatures (fcc has good properties, measured with Charpy V-Notch impact energy - whilst bcc shows worser results and bigger temperature dependence).
Anything else that is good to remember, when comparing fcc and bcc (or hcp, sc etc)?
Med venlig hilsen / Best regards Martin Jørgensen