Enhanced internal friction and specific strength of porous TiNi shape memory alloy composite by the synergistic effect of pore and Ti2Ni
作者:Peng, WL (Peng, Weiliang)[ 1 ] ; Liu, K (Liu, Kai)[ 1 ] ; Shah, BA (Shah, Basit Ali)[ 1 ] ; Yuan, B (Yuan, Bin)[ 1,2 ] ; Gao, Y (Gao, Yan)[ 1,2 ] ; Zhu, M (Zhu, Min)[ 1,2 ]
JOURNAL OF ALLOYS AND COMPOUNDS
卷: 816
文献号: 152578
DOI: 10.1016/j.jallcom.2019.152578
出版年: MAR 5 2020
文献类型:Article
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摘要
The contradictory relationship between the damping capacity and specific strength remains a challenge for developing metallic damping materials with high strength and stability for energy-absorbing and energy-saving applications. Porous TiNi shape memory alloy composite (SMAC) seems to be a valid strategy to solve this problem. The deformation and damping behaviors of porous SMAC (composed on a particle-like brittle Ti2Ni embedded in ductile TiNi shape memory alloy matrices) were studied and precisely determined using dynamic mechanical analyzer (DMA) and compressive testing in this study. The porous B2-TiNi and Ti2Ni composites exhibit a three-stage deformation character while only oneyielding phenomenon in the compressive stress-strain curves, which is ascribed to the synergistic effect of pore together with the interaction of TiNi and Ti2Ni phases which is different from dense SMAC. This is because porous SMAC with 37% porosity demonstrates exceptional damping property of at least 0.025 at relatively low strain amplitude in -100 to 200 degrees C temperature range, which resulted from modulus mismatch and the massive interfaces between pore/matrix and TiNi/Ti2Ni. Moreover, the high 113 MPa.cm(3)/g compressive specific strength and 27% fracture strain in RT to 130 degrees C temperature range further dominate on dense SMAC. (C) 2019 Elsevier B.V. All rights reserved.
关键词
作者关键词:Internal friction; Shape memory alloy; Composite; Porous alloy; TiNi
KeyWords Plus:HIGH DAMPING CAPACITY; NITI ALLOY; TRANSFORMATION; BEHAVIOR
作者信息
通讯作者地址: Yuan, B; Zhu, M (通讯作者)
显示更多South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510640, Guangdong, Peoples R China.
地址:
显示更多[ 1 ] South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510640, Guangdong, Peoples R China
[ 2 ] Key Lab Adv Energy Storage Mat Guangdong Prov, Guangzhou, Guangdong, Peoples R China
电子邮件地址:apsheng@scut.edu.cn; memzhu@scut.edu.cn
基金资助致谢
基金资助机构显示详情授权号
National Natural Science Foundation of China
51571090
Training Program of Major Basic Research Project of Provincial Natural Science Foundation of Guangdong
2017B030308001
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出版商
ELSEVIER SCIENCE SA, PO BOX 564, 1001 LAUSANNE, SWITZERLAND
期刊信息
Impact Factor (影响因子): Journal Citation Reports
类别 / 分类
研究方向:Chemistry; Materials Science; Metallurgy & Metallurgical Engineering
Web of Science 类别:Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering