COLD-ROLLING EFFECT ON LOW-FREQUENCY DAMPING PROPERTIES OF AZ31 MAGNESIUM ALLOY PLATE AT MODERATELY HIGH TEMPERATURE.

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Title:	COLD-ROLLING EFFECT ON LOW-FREQUENCY DAMPING PROPERTIES OF AZ31 MAGNESIUM ALLOY PLATE AT MODERATELY HIGH TEMPERATURE.
Authors:	CHANG, SHIH-HANG¹ shchang@niu.edu.tw
Source:	Archives of Metallurgy & Materials. 2026, Vol. 71 Issue 1, p151-156. 6p.
Subjects:	Cold rolling, Damping (Mechanics), Magnesium alloys, Crystal grain boundaries, Strains & stresses (Mechanics), Vibration isolation, Dynamic mechanical analysis
Abstract:	This study investigated the influence of cold-rolling on the damping capacity of the hot-extruded AZ31 alloy plate. The damping capacity of the hot-extruded and the cold-rolled AZ31 alloy plates were measured by a dynamic mechanical analysis with a single cantilever from 0°C to 250°C at a constant heating rate. Experimental results demonstrated increased damping capacity, which is evident in both the P2 peak and the high-temperature damping background (HTDB). The activation energy of the HTDB decreased from 2.01 eV to 0.91 eV after cold-rolling. This reduction suggests that the cold-rolling process accelerates grain boundary diffusion, promoting creep deformation at elevated temperatures. While cold-rolling enhances the HTDB damping capacity of the AZ31 alloy plate, it concurrently compromises its creep resistance at moderately high temperatures (100°C to 250°C). Therefore, for engineering applications of AZ31 alloy plates within this temperature range, careful consideration of this trade-off between improved damping and diminished creep resistance is crucial. [ABSTRACT FROM AUTHOR]
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Database:	Engineering Source

Description
Abstract:	This study investigated the influence of cold-rolling on the damping capacity of the hot-extruded AZ31 alloy plate. The damping capacity of the hot-extruded and the cold-rolled AZ31 alloy plates were measured by a dynamic mechanical analysis with a single cantilever from 0°C to 250°C at a constant heating rate. Experimental results demonstrated increased damping capacity, which is evident in both the P2 peak and the high-temperature damping background (HTDB). The activation energy of the HTDB decreased from 2.01 eV to 0.91 eV after cold-rolling. This reduction suggests that the cold-rolling process accelerates grain boundary diffusion, promoting creep deformation at elevated temperatures. While cold-rolling enhances the HTDB damping capacity of the AZ31 alloy plate, it concurrently compromises its creep resistance at moderately high temperatures (100°C to 250°C). Therefore, for engineering applications of AZ31 alloy plates within this temperature range, careful consideration of this trade-off between improved damping and diminished creep resistance is crucial. [ABSTRACT FROM AUTHOR]
ISSN:	17333490
DOI:	10.24425/amm.2026.157777