Article ID Journal Published Year Pages File Type
1501044 Scripta Materialia 2010 4 Pages PDF
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
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