Heat treatment of high-speed steel R6M5

Metal Science and Heat Treatment -     

Preliminary heat treatment of high-speed steel R6M5

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.     

Transformations during high-temperature marquenching of high-speed steel R6M5K5

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.     

Alternative technology of thermomechanical treatment of high-speed tungsten-molybdenum steel R6M5

A several-pass alternative process of thermomechanical treatment based on the discovered regular features of the effect of superplasticity is developed. Optimum modes of treatment for high-speed steels of type R6M5 are suggested. The technology has been patented in the Russian Federation and belongs to processes of environmental management.     

Effect of thermomechanical treatment on diffusion of carbon in austenite in steel R6M5

Conclusions We determined the effective diffusion coefficients and the diffusion coefficients of carbon in defect-free zones of steel R6M5 after LTTMT and HTTMT. The diffusion parameters of carbon were calculated. It was found that LTTMT has no effect on the mobility of carbon, while HTTMT increases the mobility of carbon in austenite at 1050–870°.All-Union Scientific-Research Tool Institute. I. P. Bardin Central Scientific-Research Institute of Ferrous Metallurgy. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 7, pp. 58–59, July, 1975.     

Heat treatment and properties of high-speed steel 10R6M5-MP produced by atomization and hot extrusion

Conclusions With heat treatment to a given hardness, high-speed steels manufactured by atomization have higher mechanical properties than standard steel of similar composition due to the homogeneous fine-grained structure and even distribution of finely dispersed carbide phase. These steels should be quenched from temperatures 20–30° lower than for standard steels.Moscow Automobile Factory. NPO Tulachermet. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 9, pp. 54–56, September, 1980.