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Hot Corrosion Behavior and Damage Mechanism on Yield Property of Nickel-Based Superalloy.

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Title: Hot Corrosion Behavior and Damage Mechanism on Yield Property of Nickel-Based Superalloy.
Authors: Meng, Xinyu1,2 (AUTHOR), Lyu, Shaomin2,3 (AUTHOR), Xie, Xingfei2,3 (AUTHOR), Tang, Chao2,3,4 (AUTHOR), Yu, Wugang1,4 (AUTHOR), Hou, Weixue2,3 (AUTHOR), Wang, Chengyu2,3 (AUTHOR), Qu, Jinglong2,3,4 (AUTHOR), Du, Jinhui2,3 (AUTHOR)
Source: Materials (1996-1944). Apr2025, Vol. 18 Issue 8, p1749. 23p.
Subjects: Stress concentration, Isothermal processes, Heat resistant alloys, Internal combustion engines, Sulfidation
Abstract: Ni-based superalloys with enhanced environmental resistance at high temperatures are crucial for advanced gas turbine engines. The new polycrystalline nickel-based superalloy has excellent mechanical properties, but as a low-Cr, high-alloying superalloy, its environmental resistance has never been investigated. The hot corrosion behavior of the nickel-based superalloy under molten salt conditions and its effect on its tensile properties were investigated in this paper. The results showed the following: The diffusion of the Cr, Al, and Ni elements governs the majority of the corrosion process, resulting in the production of an environmentally damaged organization with internal sulfidation and surface oxidation. The Wagner model predicts the inability to form a dense Al oxide scale on the surface because the crucial generation condition of external Al oxides is not met. In addition, the growth stress in the damage scales is the main cause of cracking and spalling in the isothermal corrosion process. Due to the increased local stress concentration brought on by this environmental degradation, the sulfide scale acts as a fracture source, guiding the matrix cracking and influencing the tensile properties of the alloy. [ABSTRACT FROM AUTHOR]
Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
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  Data: Hot Corrosion Behavior and Damage Mechanism on Yield Property of Nickel-Based Superalloy.
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  Data: <searchLink fieldCode="JN" term="%22Materials+%281996-1944%29%22">Materials (1996-1944)</searchLink>. Apr2025, Vol. 18 Issue 8, p1749. 23p.
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– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Ni-based superalloys with enhanced environmental resistance at high temperatures are crucial for advanced gas turbine engines. The new polycrystalline nickel-based superalloy has excellent mechanical properties, but as a low-Cr, high-alloying superalloy, its environmental resistance has never been investigated. The hot corrosion behavior of the nickel-based superalloy under molten salt conditions and its effect on its tensile properties were investigated in this paper. The results showed the following: The diffusion of the Cr, Al, and Ni elements governs the majority of the corrosion process, resulting in the production of an environmentally damaged organization with internal sulfidation and surface oxidation. The Wagner model predicts the inability to form a dense Al oxide scale on the surface because the crucial generation condition of external Al oxides is not met. In addition, the growth stress in the damage scales is the main cause of cracking and spalling in the isothermal corrosion process. Due to the increased local stress concentration brought on by this environmental degradation, the sulfide scale acts as a fracture source, guiding the matrix cracking and influencing the tensile properties of the alloy. [ABSTRACT FROM AUTHOR]
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  Label:
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  Data: <i>Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.3390/ma18081749
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      – Code: eng
        Text: English
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        PageCount: 23
        StartPage: 1749
    Subjects:
      – SubjectFull: Stress concentration
        Type: general
      – SubjectFull: Isothermal processes
        Type: general
      – SubjectFull: Heat resistant alloys
        Type: general
      – SubjectFull: Internal combustion engines
        Type: general
      – SubjectFull: Sulfidation
        Type: general
    Titles:
      – TitleFull: Hot Corrosion Behavior and Damage Mechanism on Yield Property of Nickel-Based Superalloy.
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            NameFull: Meng, Xinyu
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            NameFull: Lyu, Shaomin
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            NameFull: Tang, Chao
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            – D: 15
              M: 04
              Text: Apr2025
              Type: published
              Y: 2025
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              Value: 18
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