Zr61Ti2Cu25Al12 bulk metallic glass under three-point bending: Characteristic of large-deflection deformation
文献类型：期刊论文
| 作者 | Li, Diao-Feng1,2; Shen, Yong1; Xu, Jian1 |
| 刊名 | INTERMETALLICS
 |
| 出版日期 | 2021-05-01 |
| 卷号 | 132页码:13 |
| 关键词 | Metallic glasses Three-point bending Large deflection Flexibility Bending proof strength Compliant mechanisms |
| ISSN号 | 0966-9795 |
| DOI | 10.1016/j.intermet.2021.107156 |
| 通讯作者 | Xu, Jian(jianxu@imr.ac.cn) |
| 英文摘要 | 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. |
| 资助项目 | National Natural Science Foundation of China[51571192] |
| WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000632192700001 |
| 出版者 | ELSEVIER SCI LTD |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.imr.ac.cn/handle/321006/161937]  |
| 专题 | 金属研究所_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. |
入库方式： OAI收割
来源：金属研究所
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