Heat treatment, structure, and properties of powder high-speed steels 10R6M5-MP and R6M5K5-MP
In powder high-speed steels R6M5K5-MP and 10R6M5-MP the temperature for the start of carbide dissolution during austenitizing is 45–55°C lower and thermal effects of their dissolution are half those in cast steels of similar grades.
Heat treatment schedules have been developed for powder high-speed steels 10R6M5-MP and R6M5K5-MP with a heating temperature for hardening 50°C lower than for cast steels. Introduction of these schedules made it possible to improve the mechanical properties of the materials and to increase tool life by about a factor of two.
KeywordsMechanical Property Carbide Heat Treatment Thermal Effect Tool Life
Unable to display preview. Download preview PDF.
- 1.I. M. Fedorchenko, "The most important tendencies in development of powder metallurgy," Poroshk. Metall., No. 8, 23–33 (1989).Google Scholar
- 2.A. P. Gulyaev, "Bases of the physical metallurgy of powder alloys," Metalloved. Term. Obrab. Met., No. 11, 25–33, (1988).Google Scholar
- 3.D. Duda and V. Arnold, "Pulvermetallurgische Schnellarbeitssähle für Werkzeuge: Durch Sintern zu endkonturnaben Formen," Maschinenmarkt,87, Nos. 26, 27, 29, 31, 33, 35, 47 (1987).Google Scholar
- 4.F. L. Jager, W. J. C. Price, P. J. Walker, and P. Smith, "Heat treatment response and cutting of sintered type M2 high-speed steel," Powder Met.,20, No. 3, 151–157 (1977).Google Scholar
- 5.V. N. Manukyan and A. P. Petrosyan, "Study of the heat treatment for sintered high-speed steels R6M5," Poroshk. Metall., No. 9, 48–50 (1983).Google Scholar
- 6.M. N. Goryushina, N. N. Gavrikov, I. B. Voronkina, et al., "Heat treatment and properties of high-speed steel 10R6M5-MP prepared by atomizing and hot extrusion," Metalloved. Term. Obrab. Met., No. 9, 54–56 (1980).Google Scholar
- 7.G. I. Parabina, A. N. Osadchii, B. E. Natapov, et al., "Structure and properties of powder high-speed steels for industrial production," Stal', No. 1, 92–95 (1990).Google Scholar
- 8.W. W. Wendlandt, Thermal Methods of Analysis, Wiley, New York (1974).Google Scholar
- 9.Yu. A. Geller, Tool Steels [in Russian], Metallurgiya, Moscow (1983).Google Scholar
- 10.M. I. Gol'dshtein, S. V. Grachov, and Yu. G. Veksler, Special Steels [in Russian], Metallurgiya, Moscow (1985).Google Scholar
- 11.M. I. Gol'dshtein and V. V. Popov, Solubility of Interstitial Phases During Steel Heat Treatment [in Russian], Metallurgiya, Moscow (1989).Google Scholar