Large strain plastic deformation of commercially pure nickel
| Autor: | Siegfried S. Hecker, D. L. Rohr, W. H. Zimmer, Lawrence E Murr |
|---|---|
| Rok vydání: | 1983 |
| Předmět: |
Materials science
Mechanical Engineering Metallurgy General Engineering chemistry.chemical_element macromolecular substances Plasticity Strain hardening exponent Condensed Matter Physics Nickel chemistry Mechanics of Materials Transmission electron microscopy Ultimate tensile strength Hardening (metallurgy) Substructure General Materials Science Elongation Composite material |
| Zdroj: | Metal Science. 17:198-208 |
| ISSN: | 0306-3453 |
| DOI: | 10.1179/030634583790420970 |
| Popis: | Commercially pure nickel was deformed to very large strains by cold rolling. Tensile tests on prestrained sheet were used to establish strain hardening behaviour and residual ductility. The hardening of nickel was found to be peculiar: initial rapid hardening was followed by an apparent plateau, which, in turn, was followed by another stage of rapid hardening at strains larger than 4. The residual elongation dropped precipitously with initial prestrain, levelled off, and then increased again during the final stage of hardening. Nickel rolled to a strain of 6·1 exhibited a remarkable tensile strength of 1400 MN m−2 with 4% total elongation. Extensive in-plane and limited edge-on transmission electron microscopy was used to examine the evolution of substructure. Dislocation cells formed at strains |
| Databáze: | OpenAIRE |
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