Hydrogen trapping on lattice defects produced by high-pressure torsion in Fe–0.01 mass% C alloy
| Autor: | Yoji Mine, Takayuki Tsumagari, Zenji Horita |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Materials science
Hydrogen Annealing (metallurgy) Mechanical Engineering Alloy Metals and Alloys Analytical chemistry Thermal desorption chemistry.chemical_element Trapping engineering.material Condensed Matter Physics Mass spectrometry Condensed Matter::Materials Science Crystallography chemistry Mechanics of Materials engineering General Materials Science Grain boundary Physics::Atomic Physics Grain boundary strengthening |
| Zdroj: | Scripta Materialia. 63:552-555 |
| ISSN: | 1359-6462 |
| DOI: | 10.1016/j.scriptamat.2010.05.027 |
| Popis: | Hydrogen trapping in Fe–0.01 mass% C with ultrafine-grained structures produced by high-pressure torsion (HPT) was investigated by thermal desorption spectrometry. Hydrogen trapping in body-centred cubic iron was significantly increased by HPT processing through introduction of lattice defects such as vacancies, dislocations and grain boundaries. Decreasing the density of vacancies, dislocations and low-angle grain boundaries by post-HPT annealing is effective in reducing the trapped hydrogen while the hardness remains enhanced through grain refinement with high-angle boundaries. |
| Databáze: | OpenAIRE |
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