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<p>In this study, the high-temperature oxidation resistance of six variants of S30403 austenitic stainless steel, differing in V content, was investigated at 700 and 800&#xa0;°C under air atmosphere using the static discontinuous oxidation weight gain method. The results demonstrate that V exhibits a negative impact on the high-temperature oxidation resistance of austenitic stainless steel at 700 and 800&#xa0;°C. As the V content in the steel rises, the oxidation rate also tends to elevate, with the highest values recorded at 0.1138&#xa0;g m<sup>−2</sup> h<sup>−1</sup> at 700&#xa0;°C and 0.4707&#xa0;g m<sup>−2</sup> h<sup>−1</sup> at 800&#xa0;°C, respectively. The V element in the V-containing steel is uniformly distributed in the matrix and oxide film, which promotes the internal oxidation of Cr and Si elements. The content of Cr<sub>2</sub>O<sub>3</sub> and SiO<sub>2</sub> oxides on the surface decreases, and the Mn and Fe elements diffuse outward through the oxide film to form spinel structure MnCr<sub>2</sub>O<sub>4</sub>. The oxide film on the steel’s surface experiences a gradual decline in its continuity and compactness, which consequently leads to a decrease in the steel’s high-temperature oxidation resistance.</p>

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Effect of V content on high temperature oxidation resistance of S30403 austenitic stainless steel

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年9月1日

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  • Yao Zhao,
  • Bin Shen,
  • Zhiying Li,
  • Hui Yang,
  • Changrong Li

摘要

In this study, the high-temperature oxidation resistance of six variants of S30403 austenitic stainless steel, differing in V content, was investigated at 700 and 800 °C under air atmosphere using the static discontinuous oxidation weight gain method. The results demonstrate that V exhibits a negative impact on the high-temperature oxidation resistance of austenitic stainless steel at 700 and 800 °C. As the V content in the steel rises, the oxidation rate also tends to elevate, with the highest values recorded at 0.1138 g m−2 h−1 at 700 °C and 0.4707 g m−2 h−1 at 800 °C, respectively. The V element in the V-containing steel is uniformly distributed in the matrix and oxide film, which promotes the internal oxidation of Cr and Si elements. The content of Cr2O3 and SiO2 oxides on the surface decreases, and the Mn and Fe elements diffuse outward through the oxide film to form spinel structure MnCr2O4. The oxide film on the steel’s surface experiences a gradual decline in its continuity and compactness, which consequently leads to a decrease in the steel’s high-temperature oxidation resistance.