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This study investigates the brittleness of NiAl-based alloys by calculating the energies of antiphase boundaries (APBs) using linear-muffin-tin-orbital methods. The results show high APB energies, suggesting that (111) slip is unlikely to occur, and propose that substituting elements like V, Cr, or Mn can significantly lower these energies. The findings indicate that reducing APB energy may enhance ductility in NiAl alloys, which is crucial for their aerospace applications.

Author

kouroshjafari888

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EN