成形ベルトを付加したメルトドラッグ法によるAZ31マグネシウム合金のストリップキャスティング [in Japanese] Strip casting of AZ31 magnesium alloy by the melt drag process equipped with a forming belt [in Japanese]
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The purpose of this study is to continuously produce a good AZ31 magnesium alloy strip directly from molten metal magnesium by melt drag process. The forming belt was attached on the free solidified surface side of melt drag process to cast magnesium alloy strip at higher roll speed than that of the normal melt drag process. The experiment description is that the AZ31 magnesium alloy was molten and the strip was cast by melt drag process with forming belt. In this study, the effects of several factors, such as, the roll speed, the meniscus position and the protective gas in experimental device on the continuity and the surface quality of strip, the strip thickness and the microstructure were investigated. As a result, producing rapidly solidified AZ31 magnesium alloy strip without oxidization in high roll speed up to 100 m/min by this process is possible. And the relationship between the strip thickness and the crystal grain size was investigated. The thinner the strip thickness is, the finer the crystal grain size is. Obtained minimum crystal grain size is 72 μm. The strip produced in this process can be rolled without defect. Tensile strength of the rolled strip is 303 MPa.
- J. Japan Inst. Light Metals
J. Japan Inst. Light Metals 56(10), 509-513, 2006-10-30
The Japan Institute of Light Metals