Magnesium alloy sheets have low formability at room temperature due to their hexagonal closed-packed microstructures. In order to increase the formability of magnesium alloy sheets (AZ31) and fabricate a complex geometry, an incremental forming process with external heat sources such as the near-infrared heater and heated tools can be employed. Cylindrical cup shapes and Pyramidal cup shapes with various angles were fabricated to find out the formability limits. The maximum formable angle of the cylindrical cup shape increased from 20° at the room temperature to 72° by employing the incremental forming process using two external heat sources. It means that the temperature of AZ31 was increased to a proper forming temperature very efficiently.

镁合金薄板由于其六方密堆积微结构而在室温下具有较低的可成形性。为了提高镁合金板（AZ31）的可成形性并制造复杂的几何形状，可以采用外部热源（例如近红外加热器和加热工具）进行增量成形的过程。制造具有各种角度的圆柱杯形状和金字塔形杯形状，以找出可成形性极限。通过采用使用两个外部热源的渐进成型工艺，圆柱杯形的最大可成型角度从室温下的20°增加到72°。这意味着AZ31的温度非常有效地提高到合适的成型温度。