Formation Mechanism Of Lamellar Chips During Machining Of Bulk Metallic Glass
文献类型：期刊论文
| 作者 | Jiang MQ(蒋敏强) ; Dai LH(戴兰宏); Dai LH
|
| 刊名 | Acta Materialia
 |
| 出版日期 | 2009 |
| 页码 | 2730-2738 |
| 通讯作者邮箱 | lhdai@lnm.imech.ac.cn |
| 关键词 | Bulk Metallic Glass Lamellar Chip Orthogonal Cutting Model Free Volume Limit Cycle Amorphous-Alloys Plastic-Deformation Shear Bands Fracture Propagation Instability Strength |
| ISSN号 | 1359-6454 |
| 通讯作者 | Dai LH |
| 中文摘要 | The uniqThe unique lamellar chips formed in turning–machining of a Vit 1 bulk metallic glass (BMG) are found to be due to repeated shearband formation in the primary shear zone (PSZ). A coupled thermomechanical orthogonal cutting model, taking into account force, free volume and energy balance in the PSZ, is developed to quantitatively characterize lamellar chip formation. Its onset criterion is revealed through a linear perturbation analysis. Lamellar chip formation is understood as a self-sustained limit-cycle phenomenon: there is autonomous feedback in stress, free volume and temperature in the PSZ. The underlying mechanism is the symmetry breaking of free volume flow and source, rather than thermal instability. These results are fundamentally useful for machining BMGs and even for understanding the physical nature of inhomogeneous flow in BMGs.ue lamellar chips formed in turning–machining of a Vit 1 bulk metallic glass (BMG) are found to be due to repeated shearband. |
| 类目[WOS] | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| 研究领域[WOS] | Materials Science ; Metallurgy & Metallurgical Engineering |
| 关键词[WOS] | AMORPHOUS-ALLOYS ; PLASTIC-DEFORMATION ; SHEAR BANDS ; FRACTURE ; PROPAGATION ; INSTABILITY ; STRENGTH |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000266180300015 |
| 公开日期 | 2009-08-03 ; 2009-10-09 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/26582]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 通讯作者 | Dai LH |
| 推荐引用方式 GB/T 7714 | Jiang MQ,Dai LH,Dai LH. Formation Mechanism Of Lamellar Chips During Machining Of Bulk Metallic Glass[J]. Acta Materialia,2009:2730-2738. |
| APA | 蒋敏强,戴兰宏,&Dai LH.(2009).Formation Mechanism Of Lamellar Chips During Machining Of Bulk Metallic Glass.Acta Materialia,2730-2738. |
| MLA | 蒋敏强,et al."Formation Mechanism Of Lamellar Chips During Machining Of Bulk Metallic Glass".Acta Materialia (2009):2730-2738. |
入库方式： OAI收割
来源：力学研究所
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