Abstract
We consider the influence of complex microalloying on the mechanical properties, wear resistance, and contact fatigue of steels used for rock roller drill bits. We established that the complex microalloying of new steels with niobium, titanium, and rare-earth metals increased the mechanical characteristics and abrasive wear resistance by 20% and the contact fatigue by 75%. The optimum ratio of carbide-stabilizing elements, namely, niobium and titanium, in the steel, which is additionally microalloyed with rare-earth metals, is determined. As an alternative to high-nickel steels, we developed new low-alloyed 20KhGN2MBTA and 20KhGNBTChA steels.
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V. N. Vinogradov. G. V. Shreiter, and G. M. Sorokin,Impact-Abrasive Wear of Drill Bits [in Russian]. Nedra. Moscow (1975).
V. N. Vinogradov. G. M. Sorokin. and V. A. Dotsenko.Abrasive Wear of Boring Tools [in Russian], Nedra. Moscow ( 1980).
V. N. Vinogradov. G. M. Sorokin. A. N. Pashkov, and V. M. Rozbarkh.Longevity of Drill Bits [in Russian]. Nedra. Moscow (1977).
G. M. Sorokin. “Problems of metal science in the general problem of improvement of the wear resistance of steels on abrasive wear.”Term. Obrab. Fiz. Metal., No. 9, 25–31 ( 1984).
B. I. Kostetskii.Surface Strength of Materials under Friction [in Russian], Tekhnika, Kiev (1976).
L. M. Rybakova and L. I. Kuksenova,Structure and Wear Resistance of Metals [in Russian], Mashinostroenie. Moscow (1982).
G. M. Sorokin and I. V. Pavlova. “Evaluation of the abrasive resistance of steels from their strength characteristics.”Khim. Neft. Mashinostr., No. 5. 38–39 (1986).
M. M. Tenenbaum.Resistance to Abrasive Wear [in Russian]. Mashinostroenie. Moscow (1977).
G. M. Sorokin and I. N. Kopchenova. “Influence of the mechanical characteristics of steels on their fatigue wear resistance,”Khim. Neft. Mashinostr., No. 6. 19–20 (1986).
V. N. Vinogradov. G. M. Sorokin, and A. Yu. Albagachiev.Wear under Impact [in Russian], Mashinostroenie. Moscow (1982).
G. M. Sorokin and S. N. Bobrov. “Abrasive wear of high-strength steels under different conditions of contact interaction,”Tren. Izn., No. 4, 714–717(1986).
G. M. Sorokin. “Methods of improvement of the wear resistance of machines from the viewpoint of metal science.”Term. Obr. Fiz. Metal., No. 11.8–11 (1986).
R. A. Kachko.Thermochemical Treatment of Parts: Review [in Russian], LatNIINTI ( 1980).
V. S. Sagaradze,Increasing of the Reliability of Carburized Parts [in Russian], Mashinostroenie, Moscow (1975).
W. Bulla, D. E. Diesburg, and W. A. Fairhurst. “A new high-strength steel EX-55 for rock bits,”Heat Treatment of Irons and Alloys,47. No. 4, 24–25, 28 ( 1980).
K. Hiroshi and T. Noriyuki, “Improvement of rolling contact fatigue life of bearing steels,”SAE Techn. Pap. Ser., No. 841123. 9–11 (1984).
K. B. Katsov and R. A. Khrunik. “New low-nickel steels for drill bits.”Fiz.-Khim. Mekh. Mater.,15. No. 5. 90–92 (1979).
M. P. Braun.Microalloying of Steel [in Russian], Naukova Dumka. Kiev (1982).
V. M. Ershov,Physicomechanical Backgrounds of Rational Alloying of Steels and Allovs [in Russian], Metallurgiya. Moscow (1982).
F. B. Pickering,Physical Metallurgy and the Design of Steels [Russian translation]. Metallurgiya. Moscow (1982).
N. P. Lyakishev, N. M. Tulin. and Yu. L. Pliner,Alloyed Steels and Alloys with Niobium [in Russian], Metallurgiya. Moscow (1981).
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Translated from Fizyko-Khimichna Mekhanika Materialiv. Vol. 36. No. 3, pp. 102–107. May-June. 2000.
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Khrunyk, R.A. Development Of New Low-Alloy Steels For Rock Roller Drill Bits. Mater Sci 36, 437–444 (2000). https://doi.org/10.1007/BF02769608
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DOI: https://doi.org/10.1007/BF02769608