How come you can bend metal back and forth and eventually break it. What is happening at a molecular level. How does movement allow for such weakening of certain metal (all metals? idk).
In: Engineering
As you bend the metal, the outermost region is being stretched while the innermost is being compressed. Metal is not very elastic, so this stretching and compressing breaks some of the molecular bonds. Each time you bend it, more bonds break until the entire thing snaps.
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