Ion-irradiation-induced structural evolution in Ti4AlN3

被引：11
作者：
Wang, Chenxu [1 ,2 ]
Yang, Tengfei [1 ]
Chen, Chien-Hung [2 ]
Park, Sulgiye [2 ]
Liu, Shaoshuai [1 ]
Fang, Yuan [1 ]
Yan, Zhanfeng [1 ]
Xue, Jianming [1 ]
Zhang, Jie [3 ]
Wang, Jingyang [3 ]
Ewing, Rodney C. [2 ]
Wang, Yugang [1 ]
机构：
[1] Peking Univ, Ctr Appl Phys & Technol, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China
[2] Stanford Univ, Dept Geol Sci, Stanford, CA 94305 USA
[3] Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
来源：
SCRIPTA MATERIALIA | 2017年 / 133卷
基金：
中国国家自然科学基金;
关键词：
MAX phase; Ion irradiation; Microstructure; Damage evolution; Phase transition; M(N+1)AX(N) PHASES; DAMAGE EVOLUTION; MAX PHASES; TI3ALC2; TRANSITIONS; CORROSION; BEHAVIOR; PROGRESS;
D O I：
10.1016/j.scriptamat.2017.02.014
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The microstructural evolutions of Ti4AlN3 induced by 1 MeV Au+ ions irradiation over a wide fluence range were investigated by transmission electron microscopy (TEM). The high-resolution TEM (HRTEM) images and selected area electron diffraction (SAED) results clearly reveal the process of irradiation-induced partial phase transitions from the original hexagonal-close-packed (hcp) structure into face-centered-cubic ( fcc) structure, with the formation of stacking faults. The mechanism for the phase transitions of Ti4AlN3 is proposed based on the phase contrast images and electron diffraction pattern (EDP) simulation. The remained hcp structure without amorphization after high fluences irradiation suggest that Ti4AlN3 exhibits excellent radiation tolerance. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：19 / 23
页数：5
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