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<p>This work investigates the hot corrosion behaviour of Ti-48Al-2Nb-0.3Si and Ti-48Al-2Nb-0.3Si-1Sn alloys under 25 wt.% NaCl and 75 wt.% Na<sub>2</sub>SO<sub>4</sub> molten salt mixture at 900 °C. The alloys were developed through vacuum arc melting and casting. The corrosion kinetics of the alloys were measured by mass change per unit surface area. The results revealed that both alloys experienced hot corrosion attacks; however, Ti-48Al-2Nb-0.3Si-1Sn alloy demonstrated superior corrosion resistance and retained good mechanical properties compared to the Ti-48Al-2Nb-0.3Si.</p>

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The effect of hot corrosion on mechanical properties of the tin-doped titanium aluminide alloy

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年1月10日

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  • Steven Magogodi,
  • Maria Ntsoaki Mathabathe,
  • Rirhandzu Rikhotso-Mbungela,
  • Velile Vilane,
  • Charles Siyasiya,
  • Amogelang Sylvester Bolokang

摘要

This work investigates the hot corrosion behaviour of Ti-48Al-2Nb-0.3Si and Ti-48Al-2Nb-0.3Si-1Sn alloys under 25 wt.% NaCl and 75 wt.% Na2SO4 molten salt mixture at 900 °C. The alloys were developed through vacuum arc melting and casting. The corrosion kinetics of the alloys were measured by mass change per unit surface area. The results revealed that both alloys experienced hot corrosion attacks; however, Ti-48Al-2Nb-0.3Si-1Sn alloy demonstrated superior corrosion resistance and retained good mechanical properties compared to the Ti-48Al-2Nb-0.3Si.