Abstract
Steel powders obtained by mechanical alloying of iron and graphite were compacted by high-pressure torsion. During high-pressure torsion, mean grain sizes rise from about 10 nm after mechanical alloying to about 20 nm. Vickers hardness reaches values of more than 10 GPa. Differential scanning calorimetry revealed superabundant vacancies present in concentrations up to 10-3. The results are discussed in terms of strain, strain rate, energy input and deformation mechanisms.
| Original language | English |
|---|---|
| Article number | 12234 |
| Pages (from-to) | 207-215 |
| Number of pages | 9 |
| Journal | Acta Materialia |
| Volume | 97 |
| DOIs | |
| Publication status | Published - Jul 15 2015 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Polymers and Plastics
- Metals and Alloys
Cite this
Nanocrystalline steel obtained by mechanical alloying of iron and graphite subsequently compacted by high-pressure torsion. / Borchers, Christine; Garve, Clemens; Tiegel, Marie; Deutges, Martin; Herz, Andreas; Edalati, Kaveh; Pippan, Reinhard; Horita, Zenji; Kirchheim, Reiner.
In: Acta Materialia, Vol. 97, 12234, 15.07.2015, p. 207-215.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Nanocrystalline steel obtained by mechanical alloying of iron and graphite subsequently compacted by high-pressure torsion
AU - Borchers, Christine
AU - Garve, Clemens
AU - Tiegel, Marie
AU - Deutges, Martin
AU - Herz, Andreas
AU - Edalati, Kaveh
AU - Pippan, Reinhard
AU - Horita, Zenji
AU - Kirchheim, Reiner
PY - 2015/7/15
Y1 - 2015/7/15
N2 - Steel powders obtained by mechanical alloying of iron and graphite were compacted by high-pressure torsion. During high-pressure torsion, mean grain sizes rise from about 10 nm after mechanical alloying to about 20 nm. Vickers hardness reaches values of more than 10 GPa. Differential scanning calorimetry revealed superabundant vacancies present in concentrations up to 10-3. The results are discussed in terms of strain, strain rate, energy input and deformation mechanisms.
AB - Steel powders obtained by mechanical alloying of iron and graphite were compacted by high-pressure torsion. During high-pressure torsion, mean grain sizes rise from about 10 nm after mechanical alloying to about 20 nm. Vickers hardness reaches values of more than 10 GPa. Differential scanning calorimetry revealed superabundant vacancies present in concentrations up to 10-3. The results are discussed in terms of strain, strain rate, energy input and deformation mechanisms.
UR - http://www.scopus.com/inward/record.url?scp=84937556731&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84937556731&partnerID=8YFLogxK
U2 - 10.1016/j.actamat.2015.06.049
DO - 10.1016/j.actamat.2015.06.049
M3 - Article
AN - SCOPUS:84937556731
VL - 97
SP - 207
EP - 215
JO - Acta Materialia
JF - Acta Materialia
SN - 1359-6454
M1 - 12234
ER -