Abstract
Work hardening is one of the most widely used methods in strengthening metals by increasing dislocation density, which can be achieved by raising plastic strain and/or suppressing dynamic recovery of the dislocations upon plastic deformation. Based on the analyses on the data reported in our previous work in cold-rolled Pd-H system (Scripta Materialia, Vol. 68 (2013), p. 743), we propose a new strategy in hardening Pd using hydrogen as a catalytic element. It is shown that since the introduction of hydrogen facilitates dislocation formation and increases the dislocation density in Pd upon plastic deformation, subjected to a same deformation level and subsequent removal of hydrogen, Pd can obtain a higher hardness compared to that without hydrogenation before deformation. It is further pointed out that the proposed strategy may, in addition, be applied to other metals, which can dissolve a relatively large amount of hydrogen, e.g. magnesium, nickel and niobium.
Original language | English |
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Title of host publication | Diffusion in Solids and Liquids X |
Editors | A. Öchsner, J.M.P.Q. Delgado, A. Shokuhf, G.E. Murch |
Publisher | Trans Tech Publications Ltd |
Pages | 262-265 |
Number of pages | 4 |
Volume | 365 |
ISBN (Print) | 9783038355168 |
DOIs | |
State | Published - 2015 |
Event | 10th International Conference on Diffusion in Solids and Liquids, Mass Transfer - Heat Transfer - Microstructure and Properties - Nanodiffusion and Nanostructured Materials, DSL 2014 - Paris, France Duration: 23 Jun 2014 → 27 Jun 2014 |
Conference
Conference | 10th International Conference on Diffusion in Solids and Liquids, Mass Transfer - Heat Transfer - Microstructure and Properties - Nanodiffusion and Nanostructured Materials, DSL 2014 |
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Country/Territory | France |
City | Paris |
Period | 23/06/14 → 27/06/14 |
Keywords
- Dislocation
- Lattice defect
- Pd-H alloy
- Plastic deformation
- Work hardening