Mechanical Engineering Made Simple

How Atomic Architecture Dictates Material Performance.

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Discover Why Metals Get Strong or Soft When You Heat and Cool Them

Every piece of metal you use is a tiny atomic puzzle. Push or pull it and the atoms stretch; stretch too far and planes of atoms slide and the part is permanently bent. Steel is special because heating and cooling it rearranges the atoms. Heat it red-hot and carbon dissolves in; quench it fast and the carbon gets trapped, making…