Structure, Phase Composition, and Mechanical Properties of a High Strength Steel with Transition Carbide [eta]-Fe.sub.2C
- The effects of quenching and tempering on the structure, phase composition, and mechanical properties of the Fe-0.34C high strength steel with 1.77 wt % Si are studied. The tempering at temperatures up to 500°C barely has an effect on the structural characteristics of packet martensite formed duri...
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| Veröffentlicht in: | Physics of metals and metallography 2023-12, Vol.124 (12), p.1319 |
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| container_title | Physics of metals and metallography |
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| creator | Borisova, Yu. I Mishnev, R. V Tkachev, E. S Kniaziuk, T. V Gaidar, S. M Kaibyshev, R. O |
| description | - The effects of quenching and tempering on the structure, phase composition, and mechanical properties of the Fe-0.34C high strength steel with 1.77 wt % Si are studied. The tempering at temperatures up to 500°C barely has an effect on the structural characteristics of packet martensite formed during quenching. The precipitation of intermediate (transition) [eta]-carbide particles at tempering temperatures in the range of 200-400°C leads to increases in the yield strength to 1490 MPa and in the impact toughness to 35 J/cm.sup.2. The determined temperature of the ductile-brittle transition of the steel tempered at 200°C is about -50°C. A decrease in the impact toughness and a decrease in the proportion of ductile fracture with a decrease in the test temperature are accompanied by a transition from transgranular to intergranular fracture. The precipitation of cementite particles along the boundaries of the laths and blocks is observed after tempering at 500°C. This leads to a decrease in the yield strength, while the impact toughness of the steel remains unchanged. |
| doi_str_mv | 10.1134/S0031918X23602445 |
| format | Article |
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I ; Mishnev, R. V ; Tkachev, E. S ; Kniaziuk, T. V ; Gaidar, S. M ; Kaibyshev, R. O</creator><creatorcontrib>Borisova, Yu. I ; Mishnev, R. V ; Tkachev, E. S ; Kniaziuk, T. V ; Gaidar, S. M ; Kaibyshev, R. O</creatorcontrib><description>- The effects of quenching and tempering on the structure, phase composition, and mechanical properties of the Fe-0.34C high strength steel with 1.77 wt % Si are studied. The tempering at temperatures up to 500°C barely has an effect on the structural characteristics of packet martensite formed during quenching. The precipitation of intermediate (transition) [eta]-carbide particles at tempering temperatures in the range of 200-400°C leads to increases in the yield strength to 1490 MPa and in the impact toughness to 35 J/cm.sup.2. The determined temperature of the ductile-brittle transition of the steel tempered at 200°C is about -50°C. A decrease in the impact toughness and a decrease in the proportion of ductile fracture with a decrease in the test temperature are accompanied by a transition from transgranular to intergranular fracture. The precipitation of cementite particles along the boundaries of the laths and blocks is observed after tempering at 500°C. 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A decrease in the impact toughness and a decrease in the proportion of ductile fracture with a decrease in the test temperature are accompanied by a transition from transgranular to intergranular fracture. The precipitation of cementite particles along the boundaries of the laths and blocks is observed after tempering at 500°C. 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The determined temperature of the ductile-brittle transition of the steel tempered at 200°C is about -50°C. A decrease in the impact toughness and a decrease in the proportion of ductile fracture with a decrease in the test temperature are accompanied by a transition from transgranular to intergranular fracture. The precipitation of cementite particles along the boundaries of the laths and blocks is observed after tempering at 500°C. This leads to a decrease in the yield strength, while the impact toughness of the steel remains unchanged.</abstract><pub>Springer</pub><doi>10.1134/S0031918X23602445</doi></addata></record> |
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| ispartof | Physics of metals and metallography, 2023-12, Vol.124 (12), p.1319 |
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| language | eng |
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| source | SpringerLink Journals (MCLS) |
| subjects | Carbides Intermetallic compounds Iron compounds Mechanical properties Steel, High strength |
| title | Structure, Phase Composition, and Mechanical Properties of a High Strength Steel with Transition Carbide [eta]-Fe.sub.2C |
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