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<p>To address the issues of size effects and anisotropy in the microforming of stainless steel foils, this study systematically investigates the microstructure and texture evolution of cold-rolled 50-μm-thick 304 stainless steel foil during annealing at 700–1100&#xa0;°C. The results indicate that as the annealing temperature increases, the microstructure evolves through three distinct stages: recovery, recrystallization, and grain growth. In the temperature range of 800–950&#xa0;°C, dispersedly distributed Cr-rich M<sub>23</sub>C<sub>6</sub> precipitates effectively inhibit grain boundary migration via the Zener pinning effect, maintaining a fine average grain size below 5&#xa0;μm. When the temperature exceeds 1000&#xa0;°C, the dissolution of precipitates releases the pinning effect, triggering rapid grain coarsening. The texture intensity exhibits a non-monotonic trend, decreasing initially and then increasing with rising annealing temperature. At 950&#xa0;°C, the degree of texture randomization reaches a minimum, which is associated with strain-induced boundary migration (SIBM) and annealing twin formation. Consequently, 950&#xa0;°C is identified as the most favorable annealing temperature among the investigated conditions for achieving a uniform fine-grained microstructure and the weakest texture intensity.</p>

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Recrystallization behavior and texture evolution of 304 stainless steel foil during annealing

  • 期刊论文

  • 发表日期：

    2026年5月21日

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  • Huimin Shao,
  • Wei Wei,
  • Yilin Yuan,
  • Fengshuo Zhang,
  • Shengkun Yu,
  • Hanqi Xue,
  • Hao Yu

摘要

To address the issues of size effects and anisotropy in the microforming of stainless steel foils, this study systematically investigates the microstructure and texture evolution of cold-rolled 50-μm-thick 304 stainless steel foil during annealing at 700–1100 °C. The results indicate that as the annealing temperature increases, the microstructure evolves through three distinct stages: recovery, recrystallization, and grain growth. In the temperature range of 800–950 °C, dispersedly distributed Cr-rich M23C6 precipitates effectively inhibit grain boundary migration via the Zener pinning effect, maintaining a fine average grain size below 5 μm. When the temperature exceeds 1000 °C, the dissolution of precipitates releases the pinning effect, triggering rapid grain coarsening. The texture intensity exhibits a non-monotonic trend, decreasing initially and then increasing with rising annealing temperature. At 950 °C, the degree of texture randomization reaches a minimum, which is associated with strain-induced boundary migration (SIBM) and annealing twin formation. Consequently, 950 °C is identified as the most favorable annealing temperature among the investigated conditions for achieving a uniform fine-grained microstructure and the weakest texture intensity.