Zr61Ti2Cu25Al12 bulk metallic glass under three-point bending: Characteristic of large-deflection deformation

doi:10.1016/j.intermet.2021.107156

IMR OpenIR

	Zr61Ti2Cu25Al12 bulk metallic glass under three-point bending: Characteristic of large-deflection deformation
	Li, Diao-Feng 1,2; Shen, Yong 1; Xu, Jian 1
通讯作者	Xu, Jian(jianxu@imr.ac.cn)
	2021-05-01
发表期刊	INTERMETALLICS
ISSN	0966-9795
卷号	132 页码:13
摘要	With three-point bending (3 PB) approach, nonlinear large-deflection deformation in bending was investigated for Zr61Ti2Cu25Al12 (ZT1) metallic glass (MG) beams with varying thickness from 1 mm to 100 mu m. It was shown that higher flexibility is achievable by increasing the span-to-thickness ratio, which is desired for flexible members subjected to large-deflection performance. Moreover, yielding event of the MG beams in largedeflection situation can be captured via a conversion of load-deflection response into the non-dimensional form. Meanwhile, intrinsic sources responsible for the buckling events can be justified in terms of theoretical analytical solutions in mechanics. With monotonic bending and nonlinear bending theory, flexural yield strength of ZT1 MG with a thickness of 100 mu m was determined to be 2050 MPa. Its bending proof strength at 0.005% permanent strain (sigma(p,0.005%)) was determined to be 1900 MPa, indicating that the beam-thickness effect on sigma(p,0.005%) is absent at least when the thickness was reduced from 1 mm down to 100 ?m. As noticed, the response at sigma(p,0.005%) physically correlates with the propagation stress of embryonic shear bands, instead of the nucleation stress. In comparison with the current candidate materials in compliant mechanisms, ZT1 MG exhibits significant advantages in the components that the large-deflection elastic bending and high elastic-strain energy storage are desired.
关键词	Metallic glasses Three-point bending Large deflection Flexibility Bending proof strength Compliant mechanisms
资助者	National Natural Science Foundation of China
DOI	10.1016/j.intermet.2021.107156
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51571192]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000632192700001
出版者	ELSEVIER SCI LTD
引用统计	被引频次：7[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/161938
专题	中国科学院金属研究所
通讯作者	Xu, Jian
作者单位	1.Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Li, Diao-Feng,Shen, Yong,Xu, Jian. Zr61Ti2Cu25Al12 bulk metallic glass under three-point bending: Characteristic of large-deflection deformation[J]. INTERMETALLICS,2021,132:13.
APA	Li, Diao-Feng,Shen, Yong,&Xu, Jian.(2021).Zr61Ti2Cu25Al12 bulk metallic glass under three-point bending: Characteristic of large-deflection deformation.INTERMETALLICS,132,13.
MLA	Li, Diao-Feng,et al."Zr61Ti2Cu25Al12 bulk metallic glass under three-point bending: Characteristic of large-deflection deformation".INTERMETALLICS 132(2021):13.