The process formability of incremental sheet forming (ISF) is better than the conventional forming processes. Stretching, through-thickness-shear, bending-under-tension (BUT), and compressive forces are the proposed deformation mechanisms for improved formability; however, researchers have not corroborated (on consensus) the relative significance of any one among these. Similarly, researchers observed abrupt fractures (brittle fracture) and fractures preceded by necking (ductile fracture) for different case studies, which initiated a new debate and is still unanswered. Besides, researchers have extended the ISF to energy-assisted ISF to improve the process formability further for materials having a high strength-to-weight ratio. Three prominent energy-assisted ISF are (a) Electric-assisted ISF (E-ISF) works on the principle of lowering the yield stress by raising the temperature and has shown promise for Magnesium and Titanium alloy. (b) The ultrasonic vibration-assisted (UV-ISF) process works on the principle of acoustoplastic softening effect and thus far improved the room temperature material formability while reducing the forming forces. (c) Electromagnetic-assisted ISF (EM-ISF) is a non-contact, high-speed process that utilizes the pulsed magnetic field to apply inertial force, which improves formability by dislocation slips. The EM-ISF and UV-ISF have shown promise to counter the challenges during aluminum alloy forming; however, the work in this regard is still in the initial phase and has not explored its full potential. This study updates the potential research on the current status of the energy-assisted ISF. Different customized testing equipment is discussed that help understand the process mechanism. Microstructural changes in the material occur at normal ISF and with energy-assisted ISF are discussed in detail. Discussion and future work are presented based on the insight from various articles at the end.

增量板材成形 (ISF) 的工艺成形性优于传统成形工艺。拉伸、全厚度剪切、拉伸下弯曲 (BUT) 和压缩力是建议的变形机制，以提高成型性；然而，研究人员尚未证实（达成共识）其中任何一项的相对重要性。同样，研究人员在不同的案例研究中观察到突然断裂（脆性断裂）和先于颈缩的断裂（韧性断裂），这引发了新的争论并且仍然没有答案。此外，研究人员将ISF扩展为能量辅助ISF，以进一步提高高强度重量比材料的工艺成型性。三种突出的能量辅助 ISF 是 (a) 电辅助 ISF (E-ISF) 的工作原理是通过升高温度来降低屈服应力，并且已显示出用于镁和钛合金的前景。(b) 超声波振动辅助 (UV-ISF) 工艺根据声塑性软化效应原理工作，从而在降低成型力的同时大大提高了材料的室温成型性。(c) 电磁辅助 ISF (EM-ISF) 是一种非接触式高速工艺，利用脉冲磁场施加惯性力，通过位错滑移提高可成形性。EM-ISF 和 UV-ISF 已显示出应对铝合金成型过程中挑战的希望；然而，这方面的工作仍处于起步阶段，尚未充分发挥其潜力。本研究更新了能量辅助 ISF 现状的潜在研究。讨论了不同的定制测试设备，有助于理解过程机制。材料的微观结构变化发生在正常 ISF 和能量辅助 ISF 的情况下进行了详细讨论。最后根据各种文章的见解提出了讨论和未来的工作。