Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 476-493 |
| Number of pages | 18 |
| Journal | Tribology International |
| Volume | 129 |
| DOIs | |
| Publication status | Published - 2019 |
| MoE publication type | A1 Journal article-refereed |
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Keywords
- impact
- Wear
- low temperature
- Steel
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Impact wear and mechanical behavior of steels at subzero temperatures. / Valtonen, Kati (Corresponding Author); Ratia, V.; Ramakrishnan, K.R.; Apostol, Marian; Terva, J.; Kuokkala, Veli-Tapani.
In: Tribology International, Vol. 129, 2019, p. 476-493.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Impact wear and mechanical behavior of steels at subzero temperatures
AU - Valtonen, Kati
AU - Ratia, V.
AU - Ramakrishnan, K.R.
AU - Apostol, Marian
AU - Terva, J.
AU - Kuokkala, Veli-Tapani
PY - 2019
Y1 - 2019
N2 - In this study, the deformation behavior of three steels was studied at Arctic temperatures by controlled single and multiple oblique angle impacts. The results were compared with the mechanical properties of the steels determined at the corresponding temperatures. At subzero temperatures, the hardness and strength of the studied steels increased and their ability to deform plastically steadily decreased. In the martensitic steels, adiabatic shear bands were observed to form during the impacts at subzero temperatures, indicating that the deformation ability of the steels was critically impaired. At −60 °C, the adiabatic shear bands commonly acted as initiation sites for subsurface cracks. Moreover, the surface characterization of the test samples revealed formation of cracks and wear particles, which was connected to the opening of grain boundaries and martensite laths at low temperatures. Finite Element Modeling was also used to obtain more information about the impact event.
AB - In this study, the deformation behavior of three steels was studied at Arctic temperatures by controlled single and multiple oblique angle impacts. The results were compared with the mechanical properties of the steels determined at the corresponding temperatures. At subzero temperatures, the hardness and strength of the studied steels increased and their ability to deform plastically steadily decreased. In the martensitic steels, adiabatic shear bands were observed to form during the impacts at subzero temperatures, indicating that the deformation ability of the steels was critically impaired. At −60 °C, the adiabatic shear bands commonly acted as initiation sites for subsurface cracks. Moreover, the surface characterization of the test samples revealed formation of cracks and wear particles, which was connected to the opening of grain boundaries and martensite laths at low temperatures. Finite Element Modeling was also used to obtain more information about the impact event.
KW - impact
KW - Wear
KW - low temperature
KW - Steel
UR - http://www.scopus.com/inward/record.url?scp=85053014382&partnerID=8YFLogxK
U2 - 10.1016/j.triboint.2018.08.016
DO - 10.1016/j.triboint.2018.08.016
M3 - Article
VL - 129
SP - 476
EP - 493
JO - Tribology International
JF - Tribology International
SN - 0301-679X
ER -