SPD Deformation of Pearlitic, Bainitic and Martensitic Steels
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In: Materials transactions, Vol. 64.2023, No. 7, 2023, p. 1353-1363.
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TY - JOUR
T1 - SPD Deformation of Pearlitic, Bainitic and Martensitic Steels
AU - Kapp, M. W.
AU - Hohenwarter, Anton
AU - Bachmaier, Andrea
AU - Müller, Timo
AU - Pippan, Reinhard
N1 - Publisher Copyright: ©2023 The Japan Institute of Metals and Materials .
PY - 2023
Y1 - 2023
N2 - The deformation behavior of nearly fully pearlitic, bainitic and martensitic steels during severe plastic deformation is summarized in this paper. Despite their significantly different yield stresses and their microstructures, their hardening behavior during SPD is similar. Due to the enormous hardening capacity the SPD deformation is limited by the strength of the tool materials. The microstructure at the obtainable limit of strain are quite similar, which is a nanocrystalline structure in the order of 10 nm, dependent on the obtainable strain. The nanograins are partially supersaturated with carbon and the grain boundaries are stabilized by carbon. Another characteristic feature is the anisotropy in grain shape which results in an anisotropy of strength, ductility and fracture toughness. The results are important for the development of ultra-strong materials and essential for this type of steels which are frequently used for application where the behavior under rolling contact and sliding contact is important.
AB - The deformation behavior of nearly fully pearlitic, bainitic and martensitic steels during severe plastic deformation is summarized in this paper. Despite their significantly different yield stresses and their microstructures, their hardening behavior during SPD is similar. Due to the enormous hardening capacity the SPD deformation is limited by the strength of the tool materials. The microstructure at the obtainable limit of strain are quite similar, which is a nanocrystalline structure in the order of 10 nm, dependent on the obtainable strain. The nanograins are partially supersaturated with carbon and the grain boundaries are stabilized by carbon. Another characteristic feature is the anisotropy in grain shape which results in an anisotropy of strength, ductility and fracture toughness. The results are important for the development of ultra-strong materials and essential for this type of steels which are frequently used for application where the behavior under rolling contact and sliding contact is important.
KW - high pressure torsion
KW - interface
KW - nanocomposite
KW - nanostructured
KW - strength
KW - wire drawing
UR - http://www.scopus.com/inward/record.url?scp=85164540206&partnerID=8YFLogxK
U2 - 10.2320/matertrans.MT-MF2022027
DO - 10.2320/matertrans.MT-MF2022027
M3 - Article
AN - SCOPUS:85164540206
VL - 64.2023
SP - 1353
EP - 1363
JO - Materials transactions
JF - Materials transactions
SN - 1345-9678
IS - 7
ER -