Mechanical Properties of Twin Roll Cast AZ91 Magnesium Alloy at Room Temperature
Twin roll casting process combines casting and hot rolling into a single process. In this study, mechanical properties at room temperature and microstructure of the twin roll cast AZ91 magnesium alloy are investigated. The alloy exhibited a good combination of high ultimate strength of 343MPa, yield stress of 224MPa and elongation to failure of 13%. The mechanical property was very excellent compared with AZ91 die-cast alloy. EPMA analysis reveals that the Al concentration in Mg matrix is higher in twin roll cast alloy than that in die-cast alloy. This high Al concentration must be the origin of the good mechanical properties of twin roll cast alloy at room temperature.
Young Won Chang, Nack J. Kim and Chong Soo Lee
S. H. Uchida et al., "Mechanical Properties of Twin Roll Cast AZ91 Magnesium Alloy at Room Temperature", Advanced Materials Research, Vols. 26-28, pp. 145-148, 2007