Structural Transitions Induced by Ion Irradiation in V2AlC and Cr2AlC

doi:10.1111/jace.14118

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	Structural Transitions Induced by Ion Irradiation in V2AlC and Cr2AlC
	Wang, Chenxu ; Yang, Tengfei ; Xiao, Jingren ; Liu, Shaoshuai ; Xue, Jianming ; Huang, Qing ; Zhang, Jie ; Wang, Jingyang ; Wang, Yugang
刊名	JOURNAL OF THE AMERICAN CERAMIC SOCIETY
	2016
关键词	MAX PHASES CRYSTALLIZATION KINETICS M(N+1)AX(N) PHASES BULK CR2ALC HEAVY-IONS THIN-FILMS TI3SIC2 TI3ALC2 BEHAVIOR TEMPERATURE
DOI	10.1111/jace.14118
英文摘要	Nanolayered structural metallic ceramics, MAX phases, possess unique and highly attractive properties, including excellent radiation tolerance for some of them, whereas little is known about the detailed process of irradiation-induced structural transitions. In this study, the microstructural transformations and the stabilities of V2AlC and Cr2AlC induced by 1 MeV Au+ ions irradiation over a wide range of fluences were investigated by grazing incidence X-ray diffraction (GIXRD) and transmission electron microscopy (TEM). GIXRD analyses show different processes of phase transitions and amorphization tolerance under irradiation between these two MAX phases, which are consistent with the selected area electron diffraction (SAED) results and the high-resolution observations. TEM observations reveal that the nanolamellar structures are disturbed and respective phase transitions occur at relatively low fluences, with the formation of stacking faults. As the fluence increases, Cr2AlC becomes completely amorphous, while V2AlC are gradually transformed into face-centered cubic (fcc) structure from the original hexagonal close-packed (hcp) structure without amorphization, indicating that V2AlC is more tolerant of irradiation than Cr2AlC. Based on the phase contrast images and the electron-diffraction pattern (EDP) simulation of the microstructures, mechanisms of the phase transitions of V2AlC and Cr2AlC are proposed and the difference of the irradiation tolerance between them is discussed.; National Magnetic Confinement Fusion Energy Research Project of China [2015GB113000]; National Natural Science Foundation of China [11335003, 91226202]; SCI(E); EI; ARTICLE; cxwang@pku.edu.cn; ygwang@pku.edu.cn; 5; 1769-1777; 99
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/437308]
专题	工学院
推荐引用方式 GB/T 7714	Wang, Chenxu,Yang, Tengfei,Xiao, Jingren,et al. Structural Transitions Induced by Ion Irradiation in V2AlC and Cr2AlC[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2016.
APA	Wang, Chenxu.,Yang, Tengfei.,Xiao, Jingren.,Liu, Shaoshuai.,Xue, Jianming.,...&Wang, Yugang.(2016).Structural Transitions Induced by Ion Irradiation in V2AlC and Cr2AlC.JOURNAL OF THE AMERICAN CERAMIC SOCIETY.
MLA	Wang, Chenxu,et al."Structural Transitions Induced by Ion Irradiation in V2AlC and Cr2AlC".JOURNAL OF THE AMERICAN CERAMIC SOCIETY (2016).