Is there a plateau in the cyclic stress-strain curves of polycrystalline copper?
✍ Scribed by P. Lukáš; L. Kunz
- Publisher
- Elsevier Science
- Year
- 1985
- Weight
- 325 KB
- Volume
- 74
- Category
- Article
- ISSN
- 0025-5416
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Cyclic stress-strain response of polycrystalline copper of two different grain sizes was studied in constant, incremental step and variable plastic strain amplitude fatigue tests. The multi-regime css curves of largcgraincd samples exhibited short but distinct plateaus both in constant and variable
The strain-rate sensitivity of flow stress (3X7 Â 10 À3 s À1 3X7 Â 10 À4 s À1 ) in fine-grain polycrystalline copper has been studied over the entire stress±strain curve at room temperature. It is observed that the yield stress varies with mean grain diameter (32 to 59 mm) in accord with the Hall-Pe