摘要：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 m ay 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.
其他摘要：Bu çalışmada, Akgün ve Uğur tarafından tanımlanan çok-cisim etkileşmeli potansiyeli (MBP) kullanılarak fcc Fe-% 18Cr-%10 Mn-%16Ni, Fe-% 18Cr-%12Ni-%2Mo alaşımlarının fonon frekanslari incelendi. İncelenen alaşımların MBP 'yi tanımlayan parametreleri tanım
关键词：many-body potential;phonon frequencies;radial force constant;tangential force constants
其他关键词：çok-cisim etkileşme potansiyeli;fonon frekansları;açısal kuvvet sabiti;radyal kuvvet sabiti
