An energetic study on the preference of the habit plane in fcc/bcc system

作者：Gu Xinfu^*; Zhang Wenzheng

来源：International Conference on Solid-Solid Phase Transformations in Inorganic Materials (PTM 2010), 2010-06-06 to 2010-06-11.

DOI：10.4028/www.scientific.net/SSP.172-174.260

• Interfacial energy
• Orientation relationship
• Precipitation crystallography
• Interfacial structure
• Habit plane

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.

• 出版日期2011
• 单位清华大学