Friction and Adhesion in Dry Warm Forging of Magnesium Alloy with Coated Tools
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概要
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In order to develop forging process of magnesium alloys without lubrication, frictional behavior of magnesium alloy AZ31B (Mg-3%Al-1%Zn) is evaluated by a tapered plug penetration test under dry condition. The cemented tungsten carbide (WC) plugs polished to be a mirror-like surface are coated with diamond-like carbon (DLC) and TiAlN by physical vapor deposition (PVD). The cylindrical hollow billets of AZ31B are penetrated by the tapered plugs at a temperature of 200°C. The surface roughness of the hole of the billet, the adhesion length of AZ31B on the plug surface and the penetration load are measured. Compared with WC and TiAlN coating, it is found that DLC coating is effective in preventing AZ31B from adhering to the tool surface and reducing the penetration load.
著者
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Matsumoto Ryo
Graduate School Of Engineering Science Osaka University
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Kawashima Hiroaki
Graduate School Of Engineering Toyohashi University Of Technology
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OSAKADA Kozo
Graduate School of Engineering Science, Osaka University
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Osakada Kozo
Graduate School Of Engineering Science Osaka University
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Matsumoto Ryo
Graduate School of Engineering Science, Osaka University
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KAWASHIMA Hiroaki
Graduate School of Engineering Science, Osaka University
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