Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1501044 | Scripta Materialia | 2010 | 4 Pages |
Abstract
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.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Yoji Mine, Takayuki Tsumagari, Zenji Horita,