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典型文献
The determining role of carbon addition on mechanical performance of a non-equiatomic high-entropy alloy
文献摘要:
The mechanical properties and deformation mechanism of a C-doped interstitial high-entropy alloy(iHEA)with a nominal composition of Fe49.5Mn29.7C09.9Cr9.9C1(at.%)were investigated.An excellent com-bination of strength and ductility was obtained by cold rolling and annealing.The structure of the al-loy is consisted of FCC matrix and randomly distributed Cr23C6.For gaining a better understanding of deformation mechanism,EBSD and TEM were conducted to characterize the microstructure of tensile specimens interrupted at different strains.At low strain(2%),deformation is dominated by dislocations and their partial slip.With the strain increase to 20%,deformation-driven athermal phase transformation and dislocations slip are the main deformation mechanism.While at high strain of 35%before necking,deformation twins have been observed besides the HCP phase.The simultaneous effect of phase trans-formation(TRIP effect)and mechanical twins(TWIP effect)delay the shrinkage,and improve the tensile strength and plasticity.What's more,compared with the HEA without C addition,the yield strength of the C-doped iHEA has been improved,which can be attributed to the grain refinement strengthening and precipitation hardening.Together with the lattice friction and solid solution strengthening,the theoretical calculated values of yield strength match well with the experimental results.
文献关键词:
作者姓名:
Xiaolin Li;Xiaoxiao Hao;Chi Jin;Qi Wang;Xiangtao Deng;Haifeng Wang;Zhaodong Wang
作者机构:
State Key Laboratory of Solidification Processing,Center of Advanced Lubrication and Seal Materials,Northwestern Polytechnical University,Xi'an,Shaanxi 710072,PR China;State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang,Liaoning 110819,PR China
引用格式:
[1]Xiaolin Li;Xiaoxiao Hao;Chi Jin;Qi Wang;Xiangtao Deng;Haifeng Wang;Zhaodong Wang-.The determining role of carbon addition on mechanical performance of a non-equiatomic high-entropy alloy)[J].材料科学技术(英文版),2022(15):167-177
A类:
iHEA,5Mn29,7C09,9Cr9,9C1,athermal
B类:
determining,role,carbon,addition,mechanical,performance,equiatomic,high,entropy,alloy,properties,deformation,mechanism,doped,interstitial,nominal,composition,Fe49,were,investigated,An,excellent,bination,ductility,was,obtained,by,cold,rolling,annealing,consisted,FCC,matrix,randomly,distributed,Cr23C6,For,gaining,better,understanding,EBSD,TEM,conducted,characterize,microstructure,tensile,specimens,interrupted,different,strains,At,low,dominated,dislocations,their,partial,slip,With,increase,driven,phase,transformation,main,While,before,necking,twins,have,been,observed,besides,HCP,simultaneous,effect,TRIP,TWIP,delay,shrinkage,plasticity,What,more,compared,without,yield,improved,which,can,attributed,grain,refinement,strengthening,precipitation,hardening,Together,lattice,friction,solid,solution,theoretical,calculated,values,match,well,experimental,results
AB值:
0.561417
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