典型文献
Formation of adiabatic shearing band for high-strength Ti-5553 alloy:A dramatic thermoplastic microstructural evolution
文献摘要：
By using split Hopkinson pressure bar,optical microscopy and electronic microscopy,we investigate the influence of initial microstructures on the adiabatic shear behavior of high-strength Ti-5A1-5V-5Mo-3Cr(Ti-5553)alloy with lamellar microstructure and bimodal microstructure.Lamellar alloy tends to form adiabatic shearing band(ASB)at low compression strain,while bimodal alloy is considerably ASB-resistant.Comparing with the initial microstructure of Ti-5553 alloy,we find that the microstructure of the ASB changes dramatically.Adiabatic shear of lamellar Ti-5553 alloy not only results in the formation of recrystallized β nano-grains within the ASB,but also leads to the chemical redistribution of the alloying elements such as Al,V,Cr and Mo.As a result,the alloying elements distribute evenly in the ASB.In contrast,the dramatic adiabatic shear of bimodal alloy might give rise to the complete lamination of the globular primary α grain and the equiaxial prior β grain,which is accompanied by the dynamic recrystallization of α lamellae and β lamellae.As a result,ASB of bimodal alloy is composed of α/β nano-multilayers.Chemical redistribution does not occur in ASB of bimodal alloy.Bimodal Ti-5553 alloy should be a promising candidate for high performance armors with high mass efficiency due to the processes high dynamic flow stress and excellent ASB-resistance.
文献关键词：
中图分类号：
作者姓名：
Dong-yang Qin;Ying-gang Miao;Yu-long Li
作者机构：
School of Aeronautics,Northwestern Polytechnical University,Xi'an,710072,China;School of Civil Aviation,Northwestern Polytechnical University,Xi'an,710072,China
文献出处：
引用格式：
[1]Dong-yang Qin;Ying-gang Miao;Yu-long Li-.Formation of adiabatic shearing band for high-strength Ti-5553 alloy:A dramatic thermoplastic microstructural evolution)[J].防务技术,2022(11):2045-2051
A类：
equiaxial,armors
B类：
Formation,adiabatic,shearing,band,high,strength,Ti,thermoplastic,microstructural,evolution,By,using,split,Hopkinson,pressure,bar,optical,microscopy,electronic,we,investigate,influence,initial,microstructures,behavior,5A1,5V,5Mo,3Cr,lamellar,bimodal,Lamellar,tends,ASB,compression,strain,while,considerably,resistant,Comparing,find,that,changes,dramatically,Adiabatic,not,only,results,formation,recrystallized,nano,grains,within,also,leads,chemical,redistribution,alloying,elements,such,distribute,evenly,In,contrast,might,give,rise,complete,lamination,globular,primary,prior,which,accompanied,by,dynamic,recrystallization,lamellae,composed,multilayers,Chemical,does,occur,Bimodal,should,promising,candidate,performance,mass,efficiency,due,processes,flow,stress,excellent,resistance
AB值：
0.499078
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