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3. Metal strength
The structure of the material must be able to withstand all the stresses and environmental effects mentioned above.
3.1 Deformation mechanisms
A machine element (scale from m to mm) is made up of metal grains (scale from 1 mm to 1 µm), each composed of crystalline meshes (cubic, for example, scale 0.3 nm). These three structural constituents deform elastically: in particular, the cubic mesh lengthens and its cross-section narrows, becoming left or right-handed, depending...
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Metal strength
Conclusion
