Wang etc. find that when abnormal grain growth has volume fraction of 25% of coarser grain (bimodal structure), the material can exhibit high strength and high tensile ductility. We will find that if Ni has the same properties.
The conclusion show that after 95% reduction at liguid nitrogen temperature and under different annealing temperature, when strength growth, then tensile ductility down. And we also measure hardness, stress-strain curve,and morphology after 95% reduction in Ni.And LBs spacing is closer, LBs misorientation is not variation a lot when rolling at low temperature then in room temperature.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0810104-141308 |
| Date | 10 August 2004 |
| Creators | Lee, Tsun-jen |
| Contributors | Chih-Pu Chang, none, Po-We Kao, Der¡Ðshin¡@Gan |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0810104-141308 |
| Rights | campus_withheld, Copyright information available at source archive |
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