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Metal Science and Heat Treatment - 相似文献
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Metal Science and Heat Treatment - 相似文献
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| 1. | Recrystallization of deformed ferrite in steel R6M5 commences at about 780°C and it continues to the maximum recrystallization temperatures for existence of -solid solution. The temperature ranges for recrystallization and superplasticity coincide. |
| 2. | Dynamic recrystallization of ferrite in steel R6M5 with rolling for one pass is incomplete with all degrees of deformation. |
| 3. | Static recrystallization occurs entirely with 50%. The recrystallized ferrite grain size is finer than the original by a factor of four to five. |
| 4. | Polygonization of deformed ferrite may markedly stabilize the structure and there-by make recrystallization difficult. |
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I. N. Stepankin 《Metal Science and Heat Treatment》2017,59(5-6):313-320
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A. N. Popandopulo S. Yu. Kondrat'ev G. Yu. Novikova A. A. Smirnov 《Metal Science and Heat Treatment》1979,21(3):161-163
Conclusions Preliminary heat treatment of steel R6M5 can be recommended to prepare the structure for final heat treatment, reduce the holding time during final heating to quenching temperature, reduce distortion, and improve the consistency of the cutting properties of tools up to 60 mm in diameter.Production Association of the Kirov Factory. M. I. Kalinin Leningrad Polytechnical Institute. Translated from Metallovendenie i Termicheskaya Obrabotka Metallov, No. 3, pp. 2–4, March, 1979. 相似文献
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Conclusions To obtain the highest secondary hardness and red hardness the holding time during high-temperature marquenching should be 5–20 min at 600°, 5–15 min at 625°, or 10 min at 650° (625° for 10 min was established for steel R18 by A. P. Gulyaev and P. I. Podberezskii in 1939).Leningrad Polytechnical Institute. Production Association of the Kirov Factory. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 9, pp. 36–38, September, 1978. 相似文献
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Heat resistance of steel R6M5 after laser treatment 总被引：1，自引：0，他引：1
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| 1. | In high speed steel copper dissolves in the matrix, it does not form strengthening phases and is not contained in the composition of the carbides. |
| 2. | Reliable changes of impact toughness or tensile strength at elevated temperatures of high speed steel under the effect of copper were not found. |
| 3. | In heating prior to hardening copper causes considerable coarsening of the austenite grain, and strength is reduced after hardening and tempering. |
| 4. | Within the investigated limits (0.15, 0.51, 1.4%) copper has practically no effect on secondary hardness, red hardness, thermal conductivity, thermal diffusivity, on the segregation and coagulation of the carbide phase in high speed steel, and it has a deleterious effect on the tool life. |
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