The value of stress at a yield point or at the yield strength.
- If the decrease occurs at a constant yield stress then the fracture stress and fracture mode will vary.
- It is important to appreciate that equations cannot be used to predict the lower yield stress unless the resultant grain size is known.
- Since materials plastically deform as the yield stress is exceeded, a plastic zone will form near the crack tip.
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Syllabification: yield stress
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