Scholarlink

<p>The SCC behavior of AerMet 100 ultra-high-strength steel under varying temperatures and simulated marine conditions was examined through electrochemical analysis, corrosion assessments, crack propagation experiments, and slow strain rate tensile tests. Findings reveal that AerMet 100 steel exhibits higher SCC susceptibility in the salt spray environment compared to the 3.5 wt.% NaCl solution, likely attributed to more oxygen availability. When the temperature increases from 5&#xa0;°C to 45&#xa0;°C, the plastic elongation percentage and reduction of area decrease to 30.2% and 28.1% in the 3.5 wt.% NaCl solution, while 6.0% and 19.0% in the salt spray environment. The thicker corrosion product film hinders the entry of hydrogen atoms, resulting in a lower da/dt<sub>II</sub> at 45&#xa0;°C than at 5&#xa0;°C in the 3.5 wt.% NaCl solution. In salt spray environment, higher temperatures promoted hydrogen diffusion and accumulation in the fracture zone, which caused da/dt<sub>II</sub> to increase from 3.1&#xa0;nm/s to 27.3&#xa0;nm/s.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Effect of Temperature on Stress Corrosion Cracking of AerMet 100 Ultra-High-Strength Steel in Simulated Marine Environments

  • 期刊论文

  • 发表日期：

    2025年6月2日

查看全文
  • Jiajun Fan,
  • Lijin Dong,
  • Shuang Li,
  • Hongli Wang,
  • Huaibei Zheng,
  • Tingyao Liu,
  • Li Liu,
  • Qinying Wang

摘要

The SCC behavior of AerMet 100 ultra-high-strength steel under varying temperatures and simulated marine conditions was examined through electrochemical analysis, corrosion assessments, crack propagation experiments, and slow strain rate tensile tests. Findings reveal that AerMet 100 steel exhibits higher SCC susceptibility in the salt spray environment compared to the 3.5 wt.% NaCl solution, likely attributed to more oxygen availability. When the temperature increases from 5 °C to 45 °C, the plastic elongation percentage and reduction of area decrease to 30.2% and 28.1% in the 3.5 wt.% NaCl solution, while 6.0% and 19.0% in the salt spray environment. The thicker corrosion product film hinders the entry of hydrogen atoms, resulting in a lower da/dtII at 45 °C than at 5 °C in the 3.5 wt.% NaCl solution. In salt spray environment, higher temperatures promoted hydrogen diffusion and accumulation in the fracture zone, which caused da/dtII to increase from 3.1 nm/s to 27.3 nm/s.