Production of 150 cm wide AZ31 magnesium sheet by twin roll casting

Effects of ultrasonic treatment on the tensile properties and microstructure of twin roll casting Mg–3%Al–1%Zn–0.8%Ce–0.3%Mn (wt%) alloy strips

“…The dominant Mg 17 (Al,Zn) 12 phase formed by an eutectic reaction in the Mg-Al-Zn system at about 710 K [9]. Due to its low formation temperature, the Mg 17 (Al,Zn) 12 phase was the last solid phase formed during solidification and distributed on the grain boundaries ␣-Mg.…”

“…Therefore, the alloy AZ31 (Mg-3%Al-1%Zn), which has a relatively narrow equilibrium freezing range ( T = 66 K), is a good candidate for TRC magnesium alloy strip manufacturing [9]. An alternative approach is the incorporation of alloying elements, which have limited solid solubility, into the magnesium matrix.…”

“…It is well known that the major problems with TRC magnesium alloy strips are coarse columnar grains, coarse deleterious intermetallic phases and surface/edge cracks [6,9]. Ultrasonic treatment (UST) is a useful technique to improve aluminum and magnesium alloy casting quality [16,17].…”

Superplastic forming of magnesium alloys

“…The other twin roll casting facility that appears to be near to being able to produce magnesium alloy sheet on an industrial scale is being developed in Turkey by the Materials Institute, TUBITAK MRC (Kaya et al 2008;). Their unit has cast a reasonably wide range of magnesium alloys in the gauge range 4.5 to 6.5 mm and 1.5 metres wide.…”

Mechanical Properties and Formability of Ultrasonic Treated Twin Roll Casting Magnesium Alloy Sheet

“…However, the problems of TRC magnesium alloys include coarse columnar grains, large amounts of defects, such as edge cracks or surface voids, and the restriction to dilute alloys with a narrow freezing range [8] . Magnesium is generally alloyed with the addition of 3%Al and 1%Zn to obtain a wrought magnesium alloy with a narrow freezing range from 605 to 630 °C, which is suitable for TRC [9] . A small amount of manganese can improve the corrosion resistance of Mg-Al-Zn system alloy [10] .…”