Structural Transitions Induced by Ion Irradiation in V2AlC and Cr2AlC

IMR OpenIR

	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; Wang, CX; Wang, YG (reprint author), Peking Univ, Ctr Appl Phys & Technol, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China.
	2016-05-01
发表期刊	JOURNAL OF THE AMERICAN CERAMIC SOCIETY
ISSN	0002-7820
卷号	99 期号:5 页码:1769-1777
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.
部门归属	[wang, chenxu ; yang, tengfei ; xiao, jingren ; liu, shaoshuai ; xue, jianming ; wang, yugang] peking univ, ctr appl phys & technol, state key lab nucl phys & technol, beijing 100871, peoples r china ; [huang, qing] chinese acad sci, ningbo inst mat technol & engn, ningbo 315201, zhejiang, peoples r china ; [zhang, jie ; wang, jingyang] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china
学科领域	Materials Science
资助者	National Magnetic Confinement Fusion Energy Research Project of China [2015GB113000]; National Natural Science Foundation of China [11335003, 91226202]
收录类别	sci
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/75894
专题	中国科学院金属研究所
通讯作者	Wang, CX; Wang, YG (reprint author), Peking Univ, Ctr Appl Phys & Technol, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China.
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,2016,99(5):1769-1777.
APA	Wang, Chenxu.,Yang, Tengfei.,Xiao, Jingren.,Liu, Shaoshuai.,Xue, Jianming.,...&Wang, YG .(2016).Structural Transitions Induced by Ion Irradiation in V2AlC and Cr2AlC.JOURNAL OF THE AMERICAN CERAMIC SOCIETY,99(5),1769-1777.
MLA	Wang, Chenxu,et al."Structural Transitions Induced by Ion Irradiation in V2AlC and Cr2AlC".JOURNAL OF THE AMERICAN CERAMIC SOCIETY 99.5(2016):1769-1777.