Abstract
The microstructure and the spatial distribution of
deformation-induced contaminants have been investigated in copper
processed by high pressure surface rolling. It is found that the topmost
layer and some regions below this layer are contaminated as a result of
surface oxidation
and interaction with the steel rolls. The contamination is seen in the
form of films with increased oxygen and iron content. In addition, steel
fragments in the range 0.4 – 3 µm are revealed in the material.
Although contaminated regions are characterized by small subgrain sizes
and a high stored energy, these regions are found to be more resistant
to recrystallization than adjacent non-contaminated regions with coarser
subgrains.
Original language | English |
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Article number | 134840 |
Journal | Materials Letters |
Volume | 349 |
Number of pages | 4 |
ISSN | 0167-577X |
DOIs | |
Publication status | Published - 2023 |
Keywords
- Contamination
- Copper
- Gradient microstructure
- High pressure surface rolling
- Recrystallization