The structural transitions of Ti3AlC2 induced by ion irradiation

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 > 2014专题

	The structural transitions of Ti3AlC2 induced by ion irradiation
	Yang, Tengfei ; Wang, Chenxu ; Taylor, Caitlin A. ; Huang, Xuejun ; Huang, Qing ; Li, Fangzhi ; Shen, Lu ; Zhou, Xiaobin ; Xue, Jianming ; Yan, Sha ; Wang, Yugang
刊名	ACTA MATERIALIA
	2014
卷号	65 页码:351
中文摘要	The structural transitions of Ti3AlC2 induced by ion irradiation were investigated over a wide fluence range by transmission electron microscopy. No amorphization occurs even at the highest dose of 31 dpa, indicating a great tolerance to irradiation-induced amorphization. Dynamic electron diffraction simulations and high-resolution observations indicate that the nanolamellar structure of Ti3AlC2 is readily destroyed through the formation of antisite defects and a phase transformation from alpha-Ti3AlC2 to beta-Ti3AlC2 occurs at 2.61 dpa. A great number of stacking faults in basal planes are formed with increasing fluence, leading to the formation of nano Ti3AlC2 grains with different stacking sequences at 10.45 dpa. Serious structural damage and polygonization are observed at the highest dose of 31 dpa. Due to the similar structural transition process with some complex oxides (pyrochlore and murataite), it is assumed that the great irradiation tolerance of Ti3AlC2 results from the low formation energy of antisite defects. These findings first clarify the structural transition mechanism of Ti3AlC2 under ion irradiation and its relationship with irradiation tolerance, which is of vital importance in understanding the irradiation response of MAX phases and provides a clue in searching for materials with higher irradiation tolerance from MAX phases. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
公开日期	2015-09-20
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/11928]
专题	宁波材料技术与工程研究所_2014专题
推荐引用方式 GB/T 7714	Yang, Tengfei,Wang, Chenxu,Taylor, Caitlin A.,et al. The structural transitions of Ti3AlC2 induced by ion irradiation[J]. ACTA MATERIALIA,2014,65:351.
APA	Yang, Tengfei.,Wang, Chenxu.,Taylor, Caitlin A..,Huang, Xuejun.,Huang, Qing.,...&Wang, Yugang.(2014).The structural transitions of Ti3AlC2 induced by ion irradiation.ACTA MATERIALIA,65,351.
MLA	Yang, Tengfei,et al."The structural transitions of Ti3AlC2 induced by ion irradiation".ACTA MATERIALIA 65(2014):351.