Effects of ternary elements on the ductility of TiAl

	Effects of ternary elements on the ductility of TiAl
	Shu, S. L.; C. Z. Tong; F. Qiu; Q. Zou and Q. C. Jiang
	2016
发表期刊	Canadian Metallurgical Quarterly
卷号	55 期号:2
摘要	In this paper, a phononic crystal (PC) plate with tubular pillars is presented and investigated. The band structures and mode displacement profiles are calculated by using finite element method. The result shows that a complete band gap opens when the ratio of the pillar height to the plate thickness is about 1.6. However, for classic cylinder pillar structures, a band gap opens when the ratio is equal or greater than 3. A tubular pillar design with a void room in it enhances acoustic multiple scattering and gives rise to the opening of the band gap. In order to verify it, a PC structure with double tubular pillars different in size (one within the other) is introduced and a more than 2 times band gap enlargement is observed. Furthermore, the coupling between the resonant mode and the plate mode around the band gap is characterized, as well as the effect of the geometrical parameters on the band gap. The behavior of such structure could be utilized to design a pillar PC with stronger structural stability and to enlarge band gaps. (C) 2016 Elsevier B.V. All rights reserved.
文章类型	期刊
收录类别	SCI ; EI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/57184
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Shu, S. L.,C. Z. Tong,F. Qiu,et al. Effects of ternary elements on the ductility of TiAl[J]. Canadian Metallurgical Quarterly,2016,55(2).
APA	Shu, S. L.,C. Z. Tong,F. Qiu,&Q. Zou and Q. C. Jiang.(2016).Effects of ternary elements on the ductility of TiAl.Canadian Metallurgical Quarterly,55(2).
MLA	Shu, S. L.,et al."Effects of ternary elements on the ductility of TiAl".Canadian Metallurgical Quarterly 55.2(2016).

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