J Mater Sci Technol ›› 2000, Vol. 16 ›› Issue (06): 585-590.

• Research Articles • Previous Articles     Next Articles

Role of ordering energy in formation of grain structure and special boundaries spectrum in ordered alloys with L1(2) superstructure

O.B.Perevalova, E.V.Konovalova, N.A.Koneva, E.V.Kozlov   

  1. Institute of Strength Physics and Material Science, Russian Academy of Sciences, Siberian Branch pr. Academicheskii, 2/1, Tomsk, Russia...
  • Received:1999-09-29 Revised:2000-03-03 Online:2000-11-28 Published:2009-10-10
  • Contact: O.B.Perevalova

Abstract: It was revealed that an average energy of special boundaries is proportional to APE energy in the alloys with the tla superstructure. This fact proves the appearance of the GAPBs in the planes of location of special boundaries in coincidence sites of ordered alloys. It was determined that the more energy of special boundaries in ordered alloys, the more energy of complex stacking fault. There is a correlation between the distribution of special boundaries as a function its relative energy and ordering energy: the more ordering energy, the more degree of washed away of distribution. The correlation between average relative energy of special boundaries and ordering energy was detected: the more ordering energy, the more average energy of special boundaries. The reverse dependence between ordering energy and average number of special boundaries in grains limited by boundaries of general type was discovered.

Key words: