Institutional Repository of Coll Mechanoelect Engn
| Acoustic Emission Response to Brittle Cutting of 6H-SiC Using Molecular Dynamics | |
Feng Ruicheng1,2 ; Qi Yongnian1,2; Li Haiyan1,2; Song Wenyuan1,2; Fan Lihe1,2; Lei Chunli1,2; Feng Guojin3; Rui Zhiyuan1,2
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| 2021-05 | |
| 发表期刊 | Rare Metal Materials and Engineering
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| ISSN | 1002185X |
| 卷号 | 50期号:5页码:1602-1610 |
| 摘要 | The acoustic emission (AE) response to brittle cutting of 6H-SiC was studied by molecular dynamics simulation. The micro-deformation and crack formation at atomic scale were analyzed. Furthermore, the AE sources in machining were distinguished and their corresponding AE characteristics were discussed. The results show that the brittle deformation process of 6H-SiC at cutting depth of 77 nm is simple but unusual. The deformation possesses discontinuous dislocation propagation and divides the deformed workpiece into pieces, and then the crack is initiated from a fast dislocation propagation. The compressive stress results in the decline of AE power initially. Three AE sources clustered in the frequency-energy analysis are lattice vibration, dislocation propagation and crack propagation. In addition, the AE response of two times of dislocation propagation shows a higher frequency characteristic than lattice vibration does at temperature of 1 K, with the lowest energy occupation in total. On the contrary, the AE response of crack propagation has apparent frequency and energy accumulation characteristics. Copyright © 2021, Northwest Institute for Nonferrous Metal Research. Published by Science Press. All rights reserved. |
| 关键词 | Crack propagation Cracks Deformation Lattice vibrations Molecular dynamics Silicon Silicon carbide Silicon compounds Vibration analysis Brittle deformation Cutting depth Dislocation propagation Energy accumulation Frequency energy Higher frequencies Microdeformations Molecular dynamics simulations |
| 收录类别 | SCI ; SCIE |
| 语种 | 英语 |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS类目 | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS记录号 | WOS:000662931100015 |
| 出版者 | Science Press |
| EI入藏号 | 20212510535337 |
| EI主题词 | Acoustic emission testing |
| EI分类号 | 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 751.2 Acoustic Properties of Materials - 801.4 Physical Chemistry - 804.2 Inorganic Compounds - 933.1.1 Crystal Lattice - 951 Materials Science |
| 来源库 | WOS |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/148476 |
| 专题 | 机电工程学院 兰州理工大学 |
| 通讯作者 | Qi Yongnian |
| 作者单位 | 1.Lanzhou Univ Technol, Sch Mech & Elect Engn, Lanzhou 730050, Peoples R China; 2.Lanzhou Univ Technol, Key Lab Digital Mfg Technol & Applicat, Minist Educ, Lanzhou 730050, Peoples R China; 3.Univ Huddersfield, Ctr Efficiency & Performance Engn, Huddersfield HD1 3DH, W Yorkshire, England |
| 第一作者单位 | 兰州理工大学 |
| 通讯作者单位 | 兰州理工大学 |
| 第一作者的第一单位 | 兰州理工大学 |
| 推荐引用方式 GB/T 7714 | Feng Ruicheng,Qi Yongnian,Li Haiyan,et al. Acoustic Emission Response to Brittle Cutting of 6H-SiC Using Molecular Dynamics[J]. Rare Metal Materials and Engineering,2021,50(5):1602-1610. |
| APA | Feng Ruicheng.,Qi Yongnian.,Li Haiyan.,Song Wenyuan.,Fan Lihe.,...&Rui Zhiyuan.(2021).Acoustic Emission Response to Brittle Cutting of 6H-SiC Using Molecular Dynamics.Rare Metal Materials and Engineering,50(5),1602-1610. |
| MLA | Feng Ruicheng,et al."Acoustic Emission Response to Brittle Cutting of 6H-SiC Using Molecular Dynamics".Rare Metal Materials and Engineering 50.5(2021):1602-1610. |
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| 1-Acoustic emission （5138KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 | |
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