Amorphous shear bands in SmCo5

doi:10.1016/j.msea.2020.139340

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2020专题

	Amorphous shear bands in SmCo5
	Luo, Hubin ; Zhang, Hongliang ; Sheng, Hongwei ; Liu, J. Ping ; Szlufarska, Izabela
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2020
卷号	785
关键词	PRESSURE-INDUCED AMORPHIZATION DEFORMATION MECHANISM STACKING-FAULTS METALLIC-GLASS AB-INITIO SILICON TRANSFORMATIONS NANOWIRES STRAIN ORDER
DOI	10.1016/j.msea.2020.139340
英文摘要	Formation of thin amorphous shear bands has been recently shown to enable plastic flow in crystalline SmCo5 in the absence of dislocations. To bring insights into the criteria for when this mechanism can be active, here we analyze energetics and atomic structure of deformation-induced shear bands in SmCo5. We find that the formation energy of amorphous shear bands is significantly lower than cleavage energies on different crystallo-graphic planes. The density of the atoms in the shear bands decreases by less than 2% due to the amorphization, which indicates a very small dilation. Analysis of local ordering shows that the amorphous shear bands are more disordered than a melt-quenched sample and the overall fraction of icosahedra is much lower than usually reported in metallic glasses, such as Cu-Zr. The influence of amorphous shear bands on the evolution of grain orientations is also discussed.
学科主题	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/20787]
专题	2020专题
作者单位	1.Luo, HB 2.Liu, JP (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Magnet Mat & Devices, Ningbo 315201, Peoples R China. 3.Szlufarska, I (corresponding author), Univ Wisconsin, Dept Mat Sci & Engn, 1509 Univ Ave, Madison, WI 53706 USA.
推荐引用方式 GB/T 7714	Luo, Hubin,Zhang, Hongliang,Sheng, Hongwei,et al. Amorphous shear bands in SmCo5[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2020,785.
APA	Luo, Hubin,Zhang, Hongliang,Sheng, Hongwei,Liu, J. Ping,&Szlufarska, Izabela.(2020).Amorphous shear bands in SmCo5.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,785.
MLA	Luo, Hubin,et al."Amorphous shear bands in SmCo5".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 785(2020).