典型文献
Microstructure and mechanical properties of CxHf0.25NbTaW0.5 refractory high-entropy alloys at room and high temperatures
文献摘要：
The microstructure and mechanical properties of as-cast and isothermally annealed CxHf0.25NbTaW0.5(x=0,0.05,0.15,0.25)refractory high-entropy alloys(RHEAs)were studied.Both the as-cast and annealed RHEAs consisted of disordered body-centered cubic solid solution phase and metal carbide(MC)phase with a face-centered cubic crystal structure(Fm-3m space group).The primary carbides were enriched with Hf and C elements and tended to form lamellar eutectic-like microstructure in the interdendrites.The lamellar eutectic-like structure in the interdendrites would be formed from the decomposition of sub-carbide M2C under the influence of Hf element.After isothermal annealing,slatted carbides were precipitated on the matrix,and the distribution became more uniform with high C content.The forma-tion of carbides strongly influenced the mechanical properties both at room and high temperatures.The yield strength values of C0.25Hf0.25NbTaW0.5 RHEA at 1473 and 1673 K were 792 and 749 MPa,respec-tively.The result had exceeded the high temperature mechanical properties of currently known RHEAs.Moreover,this RHEA exhibited high-temperature performance stability and excellent plasticity,exceeding 30 and 50％at room and elevated temperatures(above 1273 K),respectively.During thermal deformation,carbon-containing RHEAs obtained more severe work hardening than that of ACHO RHEAs,and required greater dynamic recrystallization to achieve the dynamic equilibrium.
文献关键词：
中图分类号：
作者姓名：
Shiyu Wu;Dongxu Qiao;Haitao Zhang;Junwei Miao;Hongliang Zhao;Jun Wang;Yiping Lu;Tongmin Wang;Tingju Li
作者机构：
Key Laboratory of Solidification Control and Digital Preparation Technology(Liaoning Province),School of Materials Science and Engineering,Dalian University of Technology,Dalian 116024,China;School of Materials Science and Engineering,Zhengzhou University,Zhengzhou 450001,China;State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi'an 710072,China
文献出处：
引用格式：
[1]Shiyu Wu;Dongxu Qiao;Haitao Zhang;Junwei Miao;Hongliang Zhao;Jun Wang;Yiping Lu;Tongmin Wang;Tingju Li-.Microstructure and mechanical properties of CxHf0.25NbTaW0.5 refractory high-entropy alloys at room and high temperatures)[J].材料科学技术（英文版）,2022(02):229-238
A类：
CxHf0,25NbTaW0,interdendrites,slatted,25Hf0,RHEA,ACHO
B类：
Microstructure,mechanical,properties,refractory,high,entropy,alloys,room,temperatures,microstructure,cast,isothermally,annealed,RHEAs,were,studied,Both,consisted,disordered,body,centered,cubic,solid,solution,phase,metal,MC,face,Fm,3m,space,group,primary,carbides,enriched,elements,tended,lamellar,eutectic,like,would,formed,from,decomposition,sub,M2C,under,After,annealing,precipitated,matrix,distribution,became,more,uniform,content,strongly,influenced,both,yield,strength,values,C0,result,had,exceeded,currently,known,Moreover,this,exhibited,performance,stability,excellent,plasticity,exceeding,elevated,above,respectively,During,deformation,carbon,containing,obtained,severe,work,hardening,than,that,required,greater,dynamic,recrystallization,achieve,equilibrium
AB值：
0.461399
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