| Autor: |
Sevostyanova, Irina N., Sablina, Tatyana Yu., Kulkov, Sergey N., Panin, Victor E, Fomin, Vasily M |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2020, Vol. 2310 Issue 1, p1-4, 4p |
| Abstrakt: |
In the work, the structure, phase composition and mechanical properties of cemented steels were studied, the Fe-Mn-C steels being used as the binder phase. The manganese content in the binder phase varied from 4 to 18 wt %. The carbide phase content in the obtained cemented steels was 82 vol %, the average grain size of WC is 2.4 µm, while the porosity did not exceed 0.5%. It was shown that an increase in the manganese content in the binder phase of cemented steels leads to a change in the phase composition of the binder phase and to an increase in the lattice parameter of austenite. In cemented steels with a content of 4 wt % manganese in the binder phase, which is in a two-phase γ + α state, the maximum axial compression strength (σc = 4050 MPa) is observed. Moreover, in composites, the binder phase of which is in the metastable state of austenite, and the content of martensitic phases, is the maximum residual deformation is minimally observed. It was found that with an increase in the manganese content in the binder phase, a decrease in the compressive strength and permanent deformation to fracture is due to a decrease in the ability of the binder phase to relax stresses and transfer the load to carbide grains. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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