摘要
In this paper,it is pointed out that the descriptions of alloy phase structures are dependent on structural unit sequence.In the systematic science of alloys(SSA),the alloy phase structures are described by means of the symmetry element sequence combining with characteristic atom sequence.It is named the characteristic atom arranging structure,which can display the characteristic atoms at the lattice sites and the micro-inhomogeneity,besides the symmetry.Each characteristic atom has its own characters:neighboring configuration,potential energy,volume and electronic structure.The micro-inhomogeneity of alloy phases can be described by concentrations and short-range ordered parameters of characteristic atoms.The differences between the electronic structures of alloy phases and electronic structures of characteristic atoms in the alloy phases are also discussed.
In this paper,it is pointed out that the descriptions of alloy phase structures are dependent on structural unit sequence.In the systematic science of alloys（SSA）,the alloy phase structures are described by means of the symmetry element sequence combining with characteristic atom sequence.It is named the characteristic atom arranging structure,which can display the characteristic atoms at the lattice sites and the micro-inhomogeneity,besides the symmetry.Each characteristic atom has its own characters：neighboring configuration,potential energy,volume and electronic structure.The micro-inhomogeneity of alloy phases can be described by concentrations and short-range ordered parameters of characteristic atoms.The differences between the electronic structures of alloy phases and electronic structures of characteristic atoms in the alloy phases are also discussed.
作者
XIE YouQing1,2,3,LIU XinBi1,2,3,PENG HongJian4,NIE YaoZhuang5,LI XiaoBo6 & LI YanFen1,2,3 1 School of Materials Science and Engineering,Central South University,Changsha 410083,China
2 Powder Metallurgy Research Institute,Central South University,Changsha 410083
China
3 State Key Laboratory of Powder Metallurgy,Central South University,Changsha 410083,China
4 School of Chemistry and Chemical Engineering,Central South University,Changsha 410083,China
5 School of Physical Science and Technique,Central South University,Changsha,410083,China
6 College of Mechanical Engineering,Xiangtan University,Xiangtan 411105,China
基金
supported by the National Natural Science Foundation of China (Grant No 51071181)
the National Nature Science Foundation of Hunan Province (Grant No 2010FJ4034)
