Role of misfit in precipitation crystallography in non-ferrous metals  

作　　者：顾新福 张文征 张敏 叶飞 

机构地区：[1]Laboratory of Advanced Materials,Department of Materials Science and Engineering,Tsinghua University

出　　处：《中国有色金属学会会刊：英文版》2007年第A01期1-7,共7页Transactions of Nonferrous Metals Society of China

基　　金：Projects(59871021, 50271035, 50471012) supported by the National Natural Science Foundation of China.

摘　　要：The crystallography and morphology of precipitates in different systems were rationalized based on the optimum matching conditions. The interfaces that obey these conditions were conveniently identified in reciprocal space,in terms of three △g's parallelism rules. The theoretic basis of the O-lattice and CSL/DSC theory for these rules was provided briefly. Examples of small lattice misfit system(a Ti alloy),and large lattice misfit systems(Al and Mg alloys) were presented. The effect of lattice parameters on the orientation relationship and morphology was also discussed.The crystallography and morphology of precipitates in different systems were rationalized based on the optimum matcing conditions. The interfaces that obey these conditions were conveniently identified in reciprocal space, in terms of three Ag＇s parallelism rules. The theoretic basis of the O-lattice and CSL/DSC theory for these rules was provided briefly. Examples of small lattice misfit system （a Ti alloy）, and large lattice misfit systems （A1 and Mg alloys） were presented. The effect of lattice parameters on the orientation relationship and morphology was also discussed.

关 键 词：结晶学 非铁金属 界面 银 

分 类 号：TG115.2[金属学及工艺—物理冶金]