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<p>The mechanical characteristics and microstructural alterations of ultra-thin cold-rolled TA1 plates subjected to electropulsing treatment (EPT) with varied durations and duty cycles were examined. Complete recrystallization transpired at EPT settings of 16.31 A/mm<sup>2</sup> effective current density, 25% duty cycle, and a length of 30 seconds, resulting in excellent mechanical characteristics. Microstructural analysis revealed a notable increase in dislocation density during the initial phases of EPT, suggesting that the energy input predominantly facilitated the formation of new dislocations at this stage. As EPT advanced, dislocations progressively annihilated, with some converting into low-angle grain boundaries, thus improving plasticity. This study demonstrates that EPT effectively facilitates dislocation rearrangement and grain boundary alteration, positioning it as a sophisticated processing method for efficiently regulating the microstructure and properties of ultra-thin titanium sheets.</p>

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Microstructural Evolution and Mechanical Properties of Ultra-Thin Cold-Rolled Titanium Plates under Electropulsing Treatment (EPT)

  • 期刊论文

  • 发表日期：

    2026年3月26日

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  • Xingyu Zhou,
  • Xiaoshan Liu,
  • Guoqiu He,
  • Zeyue Wang,
  • Yangfan Wu,
  • Yingfu Liu,
  • Yiping Liao,
  • Jiangpeng Guo,
  • Qing Meng,
  • Zhiqiang Zhou

摘要

The mechanical characteristics and microstructural alterations of ultra-thin cold-rolled TA1 plates subjected to electropulsing treatment (EPT) with varied durations and duty cycles were examined. Complete recrystallization transpired at EPT settings of 16.31 A/mm2 effective current density, 25% duty cycle, and a length of 30 seconds, resulting in excellent mechanical characteristics. Microstructural analysis revealed a notable increase in dislocation density during the initial phases of EPT, suggesting that the energy input predominantly facilitated the formation of new dislocations at this stage. As EPT advanced, dislocations progressively annihilated, with some converting into low-angle grain boundaries, thus improving plasticity. This study demonstrates that EPT effectively facilitates dislocation rearrangement and grain boundary alteration, positioning it as a sophisticated processing method for efficiently regulating the microstructure and properties of ultra-thin titanium sheets.