Abstract
This chapter presents the practice of micro flexible rolling (MFR). Thin strip with varying thickness is an innovative strip product with thickness along the rolling or lateral direction or along both rolling and lateral directions and is fabricated by flexible rolling or the combination of flexible rolling and profile rolling. In this chapter, the MFR systems have been described in details. Aluminum alloy thin strip was flexibly rolled into different thickness ratios and various transition zone lengths using this innovative micro-rolling mill. The microstructure and mechanical properties of the flexibly rolled strip were systematically investigated and interpreted. The results reveal that a specimen with a bigger thickness ratio or shorter transition zone length can overcome higher deformation energy obtained in rolling to achieve the identical metal flow in the tensile testing process, which will lead to a higher strength and a lower ductility. Meanwhile, fracture morphology was discussed. Measurements of hardness for all specimens indicate an ascending trend from the thicker zone to the thinner zone.
Published Version
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