The conventional single point incremental forming (SPIF) process is unable to perform high geometrical accuracy and formability for the Ti-6AI-4V alloy sheet. In response, this article has proposed a reliable high-frequency induction heating-assisted SPIF system. Rapid localised heating (600 $\text{℃}$ and 700 $\text{℃}$) was integrated with a synchronized Inconel 625 Nickel alloy ball-roller forming tool to achieve high geometric accuracy and surface quality. This article also produced new insights into correlating mechanical and microstructural properties in SPIF at 600 $\text{℃}$ and 700 $\text{℃}$. By investigating the mechanical properties (forming force, geometric accuracy, thickness profile), an explicit finite element (FE) simulation was established to predict the results. The output strain history from the FE simulations was used as input and integrated with electron backscatter diffraction (EBSD) and micro-hardness characterisations, to form a constitutive model (Arrhenius model) to calculate the Zener-Hollomon parameter (Z-parameter). The grain size and micro-hardness experimental results were correlated with Z-parameter calculation to predict the microstructural development at the initial, middle, and final stages of the deformation process. The mechanical results revealed that the 700 $\text{℃}$ experiment performed enhanced geometric accuracy and thickness profile, with a reduced forming force. However, the surface quality is reduced as the lubricant dissipated rapidly, while the ball-roller tool effectively compensated for this behaviour by reducing the friction. At the microstructural level, 600 $\text{℃}$ revealed strong strain hardening and grain deformation, and 700 $\text{℃}$ revealed better grain refinement by dynamic recovery (DRV) and dynamic recrystallisation (DRX). A proportional relationship between Z parameters and grain size and a low-high-low micro-hardness profile was proposed.

传统的单点渐进成形 (SPIF) 工艺无法对 Ti-6AI-4V 合金板材进行高几何精度和可成形性。对此，本文提出了一种可靠的高频感应加热辅助SPIF系统。快速局部加热（600$\text{℃}$ 和 700 $\text{℃}$) 与同步 Inconel 625 镍合金滚珠成型工具集成，以实现高几何精度和表面质量。本文还对 SPIF 中 600$\text{℃}$ 和 700 $\text{℃}$. 通过研究机械性能（成形力、几何精度、厚度轮廓），建立了显式有限元 (FE) 模拟来预测结果。FE 模拟的输出应变历史用作输入，并与电子背散射衍射 (EBSD) 和显微硬度表征相结合，以形成本构模型（Arrhenius 模型）来计算 Zener-Hollomon 参数（Z 参数）。将晶粒尺寸和显微硬度实验结果与 Z 参数计算相关联，以预测变形过程初始、中间和最终阶段的显微组织发展。机械结果表明 700$\text{℃}$实验增强了几何精度和厚度轮廓，同时降低了成形力。然而，随着润滑剂快速消散，表面质量会降低，而滚珠工具通过减少摩擦有效地补偿了这种行为。在微观结构层面，600$\text{℃}$ 显示出强烈的应变硬化和晶粒变形，和 700 $\text{℃}$通过动态恢复（DRV）和动态再结晶（DRX）揭示了更好的晶粒细化。提出了 Z 参数与晶粒尺寸和低-高-低显微硬度分布之间的比例关系。