Abstract
Magnesium alloys are known for its light weight. Due to the desirable properties,magnesium is required in the fields such as transportation from the point of significant energy savings.Magnesium alloys are also being expected as an alternative for the next generation materials in fieldsof variety. At present, casting and thixomolding process are the main manufacturing methods formagnesium alloy parts. The major problem for forging of magnesium alloy is the lack of basicprocess data, such as strength and ductility.Mg96Zn2Y2 is a high strength magnesium alloy material newly developed by Dr. Y. Kawamurain Japan. It has attracted much attention recently. The name of this alloy is called as 'Kumadai Goukin'.'Kumadai Goukin' of high strength magnesium alloy material is expected as forged parts of theautomobile and materials for aerospace applications. It is necessary to clarify forging processcharacteristics of this material.The purpose of the present study is to evaluate the processing property of Mg96Zn2Y2 material.In this study, cylinder upsetting tests were performed under various deformation temperatures andspeeds for 'Kumadai Goukin'. Furthermore, the dependence of flow stress and ductility of thesematerials to processing temperature and speed was evaluated. We performed microstructureobservation to examine mechanism. We were analyzed that ductility of this material had improved.
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