Symmetric rolling(SR)and asymmetric rolling(ASR)processes were carried out on 6 mm thick AZ31 magnesium alloy sheets that were produced by twin roll casting(TRC)technique.Before rolling processes,sheets were heat trea...Symmetric rolling(SR)and asymmetric rolling(ASR)processes were carried out on 6 mm thick AZ31 magnesium alloy sheets that were produced by twin roll casting(TRC)technique.Before rolling processes,sheets were heat treated in order to obtain a homogenized microstructure.In this study,for the ASR process the rolling speed ratio between upper roller and lower was selected as 1.25.Both SR and ASR processes were utilized with 40%reduction per passes using 2 pass schedule for a total reduction ratio of 0.67.Symmetric and asymmetric rolled sheets were characterized using optical microscopy(OM),scanning electron microscopy(SEM)and transmission electron microscopy(TEM)techniques.Texture measurements were performed by using X-ray diffraction(XRD)technique and mechanical properties were investigated by tensile tests and also hardness measurements.展开更多
150 cm wide AZ31 magnesium alloy sheet was produced by twin roll casting.The sheets of 6 mm thickness were cast. The sheet material was characterized using various techniques including metallography and XRD.The mechan...150 cm wide AZ31 magnesium alloy sheet was produced by twin roll casting.The sheets of 6 mm thickness were cast. The sheet material was characterized using various techniques including metallography and XRD.The mechanical properties were investigated by tensile tests and hardness measurements.The procedures were developed for thermomechanical treatment of cast sheet material.The products of these procedures were characterized and the results were discussed for possible potential applications.展开更多
文摘Symmetric rolling(SR)and asymmetric rolling(ASR)processes were carried out on 6 mm thick AZ31 magnesium alloy sheets that were produced by twin roll casting(TRC)technique.Before rolling processes,sheets were heat treated in order to obtain a homogenized microstructure.In this study,for the ASR process the rolling speed ratio between upper roller and lower was selected as 1.25.Both SR and ASR processes were utilized with 40%reduction per passes using 2 pass schedule for a total reduction ratio of 0.67.Symmetric and asymmetric rolled sheets were characterized using optical microscopy(OM),scanning electron microscopy(SEM)and transmission electron microscopy(TEM)techniques.Texture measurements were performed by using X-ray diffraction(XRD)technique and mechanical properties were investigated by tensile tests and also hardness measurements.
文摘150 cm wide AZ31 magnesium alloy sheet was produced by twin roll casting.The sheets of 6 mm thickness were cast. The sheet material was characterized using various techniques including metallography and XRD.The mechanical properties were investigated by tensile tests and hardness measurements.The procedures were developed for thermomechanical treatment of cast sheet material.The products of these procedures were characterized and the results were discussed for possible potential applications.
