Details
| Original language | English |
|---|---|
| Pages (from-to) | 104-112 |
| Number of pages | 9 |
| Journal | Materials Science and Engineering A |
| Volume | 648 |
| Publication status | Published - 12 Sept 2015 |
Abstract
High-velocity compression tests were carried out on three different types of high-manganese (Mn) austenitic steels, namely Hadfield, TWIP and XIP steels, with the purpose of favoring twinning over slip. The experiments were conducted at three temperatures: -170. °C, room temperature and 200. °C, in order to cover both ductile and brittle deformation ranges. Various mechanisms such as slip, formation of more than one twin variant, nano-twins inside primary twins and voids were activated in Hadfield steel, while the deformation was twin-dominated in TWIP steel at all temperatures, which stems from the increase in stacking fault energy (SFE) due to the higher Mn content. The XIP steel with the highest SFE, on the other hand, deformed mostly by slip at elevated temperatures, even though extensive twin and nano-twin formation was prevalent in the microstructure as the temperature decreased to room temperature, and then to -170. °C, respectively. The current set of results lay out the roles of temperature, deformation velocity and alloy content on the microstructure evolution of high-Mn steels, which altogether can be tailored to improve the work hardening capacity of this class of materials.
Keywords
- High-manganese austenitic steel, Microstructure, Slip, Twinning, TWIP steel
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
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In: Materials Science and Engineering A, Vol. 648, 12.09.2015, p. 104-112.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Twinning activities in high-Mn austenitic steels under high-velocity compressive loading
AU - Gumus, B.
AU - Bal, B.
AU - Gerstein, G.
AU - Canadinc, D.
AU - Maier, H. J.
AU - Guner, F.
AU - Elmadagli, M.
N1 - Funding information: The financial supports by ROKETSAN A.?., and the German Research Foundation (DFG) within the Transregional Collaborative Research Center SFB/TR 73 subproject C4 are gratefully acknowledged.
PY - 2015/9/12
Y1 - 2015/9/12
N2 - High-velocity compression tests were carried out on three different types of high-manganese (Mn) austenitic steels, namely Hadfield, TWIP and XIP steels, with the purpose of favoring twinning over slip. The experiments were conducted at three temperatures: -170. °C, room temperature and 200. °C, in order to cover both ductile and brittle deformation ranges. Various mechanisms such as slip, formation of more than one twin variant, nano-twins inside primary twins and voids were activated in Hadfield steel, while the deformation was twin-dominated in TWIP steel at all temperatures, which stems from the increase in stacking fault energy (SFE) due to the higher Mn content. The XIP steel with the highest SFE, on the other hand, deformed mostly by slip at elevated temperatures, even though extensive twin and nano-twin formation was prevalent in the microstructure as the temperature decreased to room temperature, and then to -170. °C, respectively. The current set of results lay out the roles of temperature, deformation velocity and alloy content on the microstructure evolution of high-Mn steels, which altogether can be tailored to improve the work hardening capacity of this class of materials.
AB - High-velocity compression tests were carried out on three different types of high-manganese (Mn) austenitic steels, namely Hadfield, TWIP and XIP steels, with the purpose of favoring twinning over slip. The experiments were conducted at three temperatures: -170. °C, room temperature and 200. °C, in order to cover both ductile and brittle deformation ranges. Various mechanisms such as slip, formation of more than one twin variant, nano-twins inside primary twins and voids were activated in Hadfield steel, while the deformation was twin-dominated in TWIP steel at all temperatures, which stems from the increase in stacking fault energy (SFE) due to the higher Mn content. The XIP steel with the highest SFE, on the other hand, deformed mostly by slip at elevated temperatures, even though extensive twin and nano-twin formation was prevalent in the microstructure as the temperature decreased to room temperature, and then to -170. °C, respectively. The current set of results lay out the roles of temperature, deformation velocity and alloy content on the microstructure evolution of high-Mn steels, which altogether can be tailored to improve the work hardening capacity of this class of materials.
KW - High-manganese austenitic steel
KW - Microstructure
KW - Slip
KW - Twinning
KW - TWIP steel
UR - http://www.scopus.com/inward/record.url?scp=84942104080&partnerID=8YFLogxK
U2 - 10.1016/j.msea.2015.09.045
DO - 10.1016/j.msea.2015.09.045
M3 - Article
AN - SCOPUS:84942104080
VL - 648
SP - 104
EP - 112
JO - Materials Science and Engineering A
JF - Materials Science and Engineering A
SN - 0921-5093
ER -