典型文献
Phase equilibria in Ti-rich portion and thermodynamic re-optimization of Co-Ti system
文献摘要：
The experimental and thermodynamic studies of the Co-Ti system are an important part of the project to build a thermodynamic database for multicomponent Co-Ti-based alloys.Several key alloys were prepared and then examined for microstructural,compositional and thermal analyses to determine the Ti-rich phase equilibria.According to the available experimental information,the Co-Ti system was thermodynamically re-optimized on the basis of CALPHAD method.Four disordered solutions,liquid,fcc-A1(α-Co),bcc-A2(β-Ti)and hcp-A3(ε-Co and α-Ti)were modeled as substitutional ones.CoTi2 with limited solubility was treated as a stoichiometric compound,while γ-Co2Ti and β-Co2Ti with certain solubility were described in the form of(Co,Ti)2(Co,Ti)1 using a two-sublattice model.A single Gibbs energy function was employed to model two order-disorder transformations from fcc-A1 to fcc-L12(Co3Ti)and from bcc-A2 to bcc-B2(CoTi).A group of self-consistent thermodynamic parameters of the Co-Ti system were obtained.With these thermodynamic parameters,the experimental data can be described more reasonably and satisfactorily.
文献关键词：
中图分类号：
作者姓名：
Hua-kou Yang;Chen-yang Zhou;Hang Wang;Bin Yang
作者机构：
Faculty of Materials Metallurgy and Chemistry,Jiangxi University of Science and Technology,Ganzhou 341000,Jiangxi,China;Jiangxi Advanced Copper Industry Research Institute,Yingtan 335000,Jiangxi,China
文献出处：
引用格式：
[1]Hua-kou Yang;Chen-yang Zhou;Hang Wang;Bin Yang-.Phase equilibria in Ti-rich portion and thermodynamic re-optimization of Co-Ti system)[J].钢铁研究学报（英文版）,2022(06):914-924
A类：
CoTi2,Co2Ti,Co3Ti,CoTi
B类：
Phase,equilibria,rich,portion,optimization,system,experimental,studies,important,part,project,build,database,multicomponent,alloys,Several,key,were,prepared,then,examined,microstructural,compositional,thermal,analyses,determine,phase,According,available,information,was,thermodynamically,optimized,basis,CALPHAD,method,Four,disordered,solutions,liquid,fcc,A1,bcc,A2,hcp,A3,modeled,substitutional,ones,limited,solubility,treated,stoichiometric,compound,while,certain,described,using,two,sublattice,single,Gibbs,energy,function,employed,transformations,from,L12,B2,group,self,consistent,parameters,obtained,With,these,can,more,reasonably,satisfactorily
AB值：
0.504359
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