| 21. | The interaction between the stress fields of dislocations can impede dislocation motion by repulsive or attractive interactions.
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| 22. | In substitutional solid solutions, these stress fields are spherically symmetric, meaning they have no shear stress component.
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| 23. | Dislocation defects also create a stress field.
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| 24. | A "'stress field "'is a region in a body for which the stress is defined at every point.
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| 25. | The carbon atoms in the interstitial sites of the lattice creates a stress field that impedes dislocation movement.
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| 26. | As these interstitial atoms distort the lattice slightly, there will be an associated residual stress field surrounding the interstitial.
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| 27. | Good examples of this phenomenon are the regions near a coherent precipitate or the stress field around a dislocation.
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| 28. | The stress fields created by adding solute atoms form the basis of the material strengthening process that occurs in alloys.
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| 29. | The bonds are clearly stretched around the location of the dislocation and this stretching causes the stress field to form.
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| 30. | The formation of this field is linked to the rifting of the Andahua valley, as well as local stress fields.
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