Effect of spatial heterogeneity on level of rejuvenation in Ni80P20 metallic glass

查看全文 作　　者：Tzu-Chia [1]Chen;Mahyuddin KM [2]Nasution;Abdullah Hasan [3]Jabbar;Sarah Jawad [4]Shoja;Waluyo Adi [5]Siswanto;Sigiet Haryo [6]Pranoto;Dmitry [7]Bokov;Rustem [8]Magizov;Yasser Fakri [9]Mustafa;[10]A.Surendar;Rustem [11]Zalilov;Alexandr [12]Sviderskiy;Alla [13]Vorobeva;Dmitry [13]Vorobyev;Ahmed [14]Alkhayyat 机构地区：[1]Dhurakij Pundit University,Bangkok 10210,Thailand;[2]Data Science and Computational Intelligence Research Group,Universitas Sumatera Utara,Medan,Indonesia;[3]Optical Department,College of Health and Medical Technology,Sawa University,Ministry of Higher Education and Scientific Research,Al-Muthanaa,Samawah,Iraq;[4]College of Health&Medical Technology,Al-Ayen University,Iraq;[5]Faculty of Engineering,Universitas Muhammadiyah Surakarta,Jawa Tengah 57102,Indonesia;[6]Department of Mechanical Engineering,Faculty of Science and Technology,Universitas Muhammadiyah Kalimantan Timur,Samarinda 75124,Indonesia;[7]Institute of Pharmacy,Sechenov First Moscow State Medical University,8 Trubetskaya St.,Bldg.2,Moscow 119991,Russia;[8]Kazan Federal University,Kazan,Russia;[9]Department of Pharmaceutical Chemistry,College of Pharmacy,University of Mosul,Mosul-41001,Iraq;[10]Department of Pharmacology,Saveetha Dental College and Hospital,Saveetha Institute of Medical and Technical Sciences,Chennai,India;[11]Nosov Magnitogorsk State Technical University,Magnitogorsk,Russia;[12]Innovative University of Eurasia,Pavlodar,Republic of Kazakhstan;[13]K.G.Razumovsky Moscow State University of Technologies and Management(The First Cossack University),Moscow 109004,Russia;[14]College of Technical Engineering,The Islamic University,Najaf,Iraq 出　　处：《Chinese Physics B》索引2022年第31卷第9期,共9页 摘　　要：Understanding the relation between spatial heterogeneity and structural rejuvenation is one of the hottest topics in the field of metallic glasses(MGs).In this work,molecular dynamics(MD)simulation is implemented to discover the effects of initial spatial heterogeneity on the level of rejuvenation in the Ni_(80)P_(20)MGs.For this purpose,the samples are prepared with cooling rates of 10^(10) K/s-10^(12) K/s to make glassy alloys with different atomic configurations.Firstly,it is found that the increase in the cooling rate leads the Gaussian-type shear modulus distribution to widen,indicating the aggregations in both elastically soft and hard regions.After the primary evaluations,the elastostatic loading is also used to transform structural rejuvenation into the atomic configurations.The results indicate that the sample with intermediate structural heterogeneity prepared with 10^(11) K/s exhibits the maximum structural rejuvenation which is due to the fact that the atomic configuration in an intermediate structure contains more potential sites for generating the maximum atomic rearrangement and loosely packed regions under an external excitation.The features of atomic rearrangement and structural changes under the rejuvenation process are discussed in detail. 关 键 词：metalic glasses mechanical properties molecular dynamics simulation disordered solids