Abstract
A thermogravimetric analysis has been applied to processes in R6M5 high-speed steel powder thermochemically treated in ammonia. Temperature ranges have been identified for the adsorption of nitrogen, nitriding, and denitriding. To prepare a powder containing nitrogen of superequilibrium concentration, conditions have been defined for maximum nitrogen uptake, fullest appliance of phase transitions, and diffusion: isothermal hold at 520°C for 20 min and at 620°C for 60 min.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Determining Compositions for Nitrogen-Bearing Tool Steels Made by Casting with Counterpressure and Determining Prospects for Their Use in the Economy: Report No. 01.84.0043594, Ukr. NIIspetsstal', Zaporozh'e (1986).
I. R. Dolgoarshinnykh, O. A. Mazno, and A. A. Yudakov, “Making high-speed steel powder by vibrogrinding of turnings in ammonia,” Poroshk. Metall., No. 3, 1–3 (1993).
Additional information
Chemical Institute, Far East Division, Russian Academy of Sciences, Vladivostok. Translated from Poroshkovaya Metallurgiya, Nos. 5–6, pp. 21–24, May–June, 1995.
Rights and permissions
About this article
Cite this article
Mazno, O.A., Dolgoarshinnykh, I.R. & Yudakov, A.A. A thermal analysis study on nitriding R6M5 high-speed steel powder. Powder Metall Met Ceram 34, 244–246 (1995). https://doi.org/10.1007/BF00560123
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00560123