High-damping Cr−Al steel
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The maximum damping in steel with 11% Cr corresponds to a content of 0.5–4% Al and it depends on a heat-treatment schedule. In particular, after annealing at 850°C a maximum is observed for steel 04Kh11Yu and it is δm=16%, which is much higher than for steel of the Kh13 type (δm≤5%). Steel with addition of 0.5–4% Al has high impact strength and satisfactory strength.
In order to achieve high damping and good treatment efficiency, particularly hot forming, steel type 04Kh11 should be alloyed with 0.5–3% Al.
Damping mechanisms for Cr−Al steel are of a magnetomechanical nature. In view of this, in constructing articles with this steel it is necessary to consider their stressed state and the effect of a magnetic field on damping.
KeywordsMagnetic Field Stressed State High Impact Good Treatment Impact Strength
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- 1.“New alloy ‘Silentalloy’ with high damping capacity (in order to reduce noise and vibration),” in: Prospectus of Metal Products Div. (Toshiba-Tokyo Sibaru Electric Co.), Japan [Russian translation], No. 9804, Moscow (1977).Google Scholar
- 2.Yu. K. Favstov, Yu. M. Matveev, and N. N. Chernykh, “Properties of high-damping alloys of the system iron-chromium-aluminum,” in: Damping Metallic Materials, Proc. 4th Sci.-Tech. Conf., Kirov (1984), pp. 29–30.Google Scholar
- 3.V. I. Krakhmalev, B. S. Krylov, and N. A. Sekanin, “Precision alloy for high damping based on Fe−Cr−Al and experience of using it,” in: Damping Metallic Materials, Proc. 6th Republican Sci.-Tech. Conf., Kirov (1991), pp. 67–68.Google Scholar
- 4.A. I. Skvortsov and V. M. Kondratov, “Damping properties of graphitized steels with a ferritic and ferrite-carbide matrix,” Metalloved. Term. Obrab. Met., No. 8, 45–48 (1980).Google Scholar
- 5.A. I. Skvortsov and V. M. Kondratov, “Study of ordering for an alloy of the system iron-cobalt-silicon-carbon by the internal friction method,” in: Internal Friction in Metals and Inorganic materials [in Russian], Nauka, Moscow (1982), pp. 133–136.Google Scholar