High temperature effects on irradiation damage of Ti2AlC

doi:10.1016/j.nimb.2017.01.040

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	High temperature effects on irradiation damage of Ti2AlC
	Liu, Shaoshuai ; Wang, Chenxu ; Yang, Tengfei ; Fang, Yuan ; Huang, Qing ; Wang, Yugang
	2017
关键词	MAX phase High temperature irradiation Structure transition Mechanical property MAX PHASES STRUCTURAL TRANSITIONS ION IRRADIATION NEUTRON-IRRADIATION TI3SIC2 TI3ALC2 NUCLEAR ENERGY TOLERANCE CERAMICS
DOI	10.1016/j.nimb.2017.01.040
英文摘要	As one of the MAX phases, Ti2AlC combines attractive properties of both ceramics and metals, and has been suggested for potential nuclear reactor applications due to its excellent resistance to irradiation. This work is aimed at investigating the high temperature effects on evolution of irradiation damage in the MAX phase Ti2AlC. Ti2AlC was irradiated with 1.1 MeV C4+ ions at 298 K and 873 K with fluences ranging from 2 x 10(15) cm(-2) to 6 x 1016 cm(-2). Scanning electron microscopy (SEM), Raman spectra, grazing incidence X-ray diffraction (GIXRD), transmission electron microscopy (TEM), and nanoindentation were used to characterize the evolution of microstructures and mechanical properties at both temperatures. Significant crackings along grain boundaries were observed in 298 K, which were not observed in the samples irradiated at 837 K. No amorphization was found in the GIXRD analyses and TEM characterization, and some fcc phases were formed during high dose irradiation at 298 K. Raman spectra show that all the vibration modes of Ti2AlC decreased severely in room temperature irradiation, but they nearly remained unchanged in high temperature irradiation at the dose of 2 x 10(15) cm(-2). Nanoindentation shows significant hardening for Ti2AlC irradiated at high temperature, suggesting the presence of irradiation -induced defects. The current study reveals that the irradiation tolerance of Ti2AlC is significantly improved with increasing temperature, demonstrating the great potential of Ti2AlC for using in advanced nuclear reactors. (C) 2017 Elsevier B.V. All rights reserved.; National Magnetic Confinement Fusion Energy Research Project of China [2015GB113000]; CPCI-S(ISTP); 662-669; 406
会议录	27th International Conference on Atomic Collisions in Solids (ICACS)
语种	英语
内容类型	会议论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/469648]
专题	工学院
推荐引用方式 GB/T 7714	Liu, Shaoshuai,Wang, Chenxu,Yang, Tengfei,et al. High temperature effects on irradiation damage of Ti2AlC[C]. 见:.