An Energetic Study on the Preference of the Habit Plane in Fcc/bcc System

Abstract:

The preference of the habit planes (HPs) developed from precipitation in the fcc/bcc system has been investigated. The interfacial energy of different interface orientations has been examined with variation of the orientation relationships (OR) and lattice parameters by a classical molecular dynamics method. The results show that interface has the lowest interfacial energy when it contains parallel Burgers vectors and a set of dislocations. The local minimum of interfacial energy may not associated with a maximum of dislocation spacing. It is also found that the near Kurdjumov-Sachs OR is more preferable than the near Nishiyama-Wasserman OR. Contrary to the previous interfacial energy calculations, which usually limit to rational ORs, the present work allows ORs to be irrational, which agrees with the observations.

• Periodical: Solid State Phenomena (Volumes 172-174)
• Pages: 260-266
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.172-174.260
• Online since: June 2011
• Authors: Xin Fu Gu, Wen Zheng Zhang
• Keywords: Habit Plane, Interfacial Energy, Interfacial Structure, Orientation Relationship, Precipitation Crystallography

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