Researchers from AIST have developed a new rolling process for improving room-temperature formability of a damping magnesium alloy (M1 alloy). In the new rolling process, while a conventional rolling machine is used, the room-temperature formability of magnesium alloys is improved by controlling the annealing temperature and the rolling temperature. The sheet rolled by the new process exhibits excellent room-temperature formability close to that of aluminum alloys (Erichsen value: 7.9) (Fig.1), because the magnesium crystals in the texture of the sheet are less aligned than those of the conventional rolled sheets. The sheet rolled by the new process exhibits not only excellent room-temperature formability but also good damping capacity. Thus, it is expected that magnesium alloy products as damping components can be easily processed by the press-forming at room temperature.
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