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Fe-18%Cr-10%Mn-16%Ni ve Fe-18%Cr-12%Ni-2%Mo ALAŞIMLARININ FONON DİSPERSİYONU

PHONON DISPERSION of Fe-18%Cr-10%Mn-16%Ni and Fe-18%Cr-12%Ni-2%Mo ALLOYS

Journal Name:

  • Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi

Publication Year:

  • 2006

Key Words:

Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
In the present paper, to investigate the phonon frequencies of face-centered-cubic (f.c.c.) Fe-18%Cr-10%Mn-16%Ni and Fe-18%Cr-12%Ni-2%Mo alloys it has been used an empirical many-body potential (MBP) developed by Akgün and Uğur, recently. The parameters defining the MBP f.c.c. alloys may be computed by following a procedure described. The radial, tangential and three-body force constants of the alloys have been calculated. Finally, the phonon frequencies of the alloys along the principal symmetry directions have been computed using the calculated two-and three-body force constants. The theoretical results are compared with the experimental phonon dispersions. The agreement shows that the proposed MBP provides a reasonable description of the f.c.c. alloys.
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Abstract (Original Language): 
Bu çalışmada, Akgün ve Uğur tarafından tanımlanan çok-cisim etkileşmeli potansiyeli (MBP) kullanılarak fcc Fe-%18Cr- %10Mn-%16Ni, Fe-%18Cr-%12Ni-%2Mo alaşımlarının fonon frekansları incelendi. İncelenen alaşımların MBP 'yi tanımlayan parametreleri tanımlanan metoda göre hesaplandı. Alaşımların açısal, radyal ve üç-cisim kuvvet sabitleri hesaplandı. Sonuç olarak alaşımların fonon frekansları temel simetri doğrultuları boyunca, hesaplanan iki ve üç-cisim kuvvet sabitleri kullanılarak bulundu. Fonon dispersiyonlarında teorik sonuçlar deneysel sonuçlarla karşılaştırıldı. f.c.c. alaşımlarda, potansiyelin etkili olduğu görüldü.
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REFERENCES

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