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http://hdl.handle.net/10204/1672
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| Title: | Grain size, stress and creep in polycrystalline solids |
| Authors: | Nabarro, FRN |
| Keywords: | Peierls stresses
Sigma stresses
Polycrystalline solids
Grain size |
| Issue Date: | Aug-2000 |
| Publisher: | AMER INST physics |
| Citation: | Nabarro, FRN. 2000. Grain size, stress and creep in polycrystalline solids. Physics of the solid state, vol 42 (8), pp 1456-1459 |
| Abstract: | If a stress sigma is applied to a polycrystal of grain size L, the mode of creep deformation depends on the answers to the following questions: (i) Does sigma exceed the Peierls stress sigma (p); (ii) Does L exceed the dislocation spacing in a Taylor lattice stabilized by sigma (p); (iii) Does Lo exceed the value required for a Frank-Read or Bardeen-Herring source to operate within the grain? (iv) Does L (1/2) sigma exceed the Hall-Petch value required for slip to propagate across a grain boundary? The (L, sigma) plane is thus partitioned into regions in which different creep modes predominate. |
| URI: | http://hdl.handle.net/10204/1672
http://hdl.handle.net/10204/1672 |
| ISSN: | 1063-7834 |
| Appears in Collections: | Manufacturing science and technology
General science, engineering & technology
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| nabarro_2000_1.pdf | | 57Kb | Adobe PDF | View/Open |
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