1. Higher dislocation density increases yield strength and causes work hardening of metals. 2. Work hardening may be desirable or undesirable depending on the context.3. At the very least, they cause internal work hardening and other microscopic imperfections. 4. Work hardening occurs most notably for ductile materials such as metals.5. Typical behaviors observed in rocks include strain softening, perfect plasticity, and work hardening . 6. There are two common mathematical descriptions of the work hardening phenomenon. 7. Work hardening is a consequence of plastic deformation, a permanent change in shape.8. The Burgers vector is significant in determining the solute hardening, precipitation hardening and work hardening . 9. However, after thermo mechanical treatment ( TMT ), bars do not need more work hardening . 10. While autofrettage will induce some work hardening , that is not the primary mechanism of strengthening.
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