| A new method for grain refinement in magnesium alloy: High speed extrusion machining |
| Liu Y; Cai SL ; Dai LH(戴兰宏); Liu, Y (reprint author), Univ Sci & Technol Beijing, Sch Math & Phys, Beijing 100083, Peoples R China.
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| 发表期刊 | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
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| 2016-01-10
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| 卷号 | 651页码:878-885 |
| ISSN | 0921-5093
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| 摘要 | Magnesium alloys have received broad attentions in industry due to their competitive strength to density ratio, but the poor ductility and strength limit their wide range of applications as engineering materials. A novel severe plastic deformation (SPD) technique of high speed extrusion machining (HSEM) was used here. This method could improve the aforementioned disadvantages of magnesium alloys by one single processing step. In this work, systematic HSEM experiments with different chip thickness ratios were conducted for magnesium alloy AZ31B. The microstructure of the chips reveals that HSEM is an effective SPD method for attaining magnesium alloys with different grain sizes and textures. The magnesium alloy with bimodal grain size distribution has increased mechanical properties than initial sample. The electron backscatter diffraction (EBSD) analysis shows that the dynamic recrystallization (DRX) affects the grain refinement and resulting hardness in AZ31B. Based on the experimental observations, a new theoretical model is put forward to describe the effect of DRX on materials during HSEM. Compared with the experimental measurements, the theoretical model is effective to predict the mechanical property of materials after HSEM. (c) 2015 Elsevier B.V. All rights reserved. |
| 关键词 | High Speed Extrusion Machining
Magnesium Alloy
Grain Refinement
Dynamic Recrystallization
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| DOI | 10.1016/j.msea.2015.11.046
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| URL | 查看原文
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| 收录类别 | SCI
; EI
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| 语种 | 英语
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| WOS记录号 | WOS:000367486800100
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| 关键词[WOS] | SEVERE PLASTIC-DEFORMATION
; BULK NANOSTRUCTURED MATERIALS
; HIGH-PRESSURE TORSION
; AZ31 MG ALLOY
; MECHANICAL-PROPERTIES
; ELEVATED-TEMPERATURES
; STRAIN
; MICROSTRUCTURE
; EVOLUTION
; METALS
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| WOS研究方向 | Science & Technology - Other Topics
; Materials Science
; Metallurgy & Metallurgical Engineering
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| WOS类目 | Nanoscience & Nanotechnology
; Materials Science, Multidisciplinary
; Metallurgy & Metallurgical Engineering
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| 项目资助者 | This work has been supported by the National Natural Science Foundation of China (Grant no. 11132011), Fundamental Research Funds for the Central Universities (Grant no. FRF-TP-15-101A1), the National Basic Research Program of China (Grant no. 2012CB937500), and the CAS/SAFEA International Partnership Program for Creative Research Teams.
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| 课题组名称 | LNM冲击动力学与新型材料力学性能
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| 论文分区 | 一类
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| 力学所作者排名 | False
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/58645
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| 专题 | 非线性力学国家重点实验室
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| 通讯作者 | Liu, Y (reprint author), Univ Sci & Technol Beijing, Sch Math & Phys, Beijing 100083, Peoples R China. |
推荐引用方式
GB/T 7714 |
Liu Y,Cai SL,Dai LH,et al. A new method for grain refinement in magnesium alloy: High speed extrusion machining[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2016,651:878-885.
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| APA |
Liu Y,Cai SL,戴兰宏,&Liu, Y .(2016).A new method for grain refinement in magnesium alloy: High speed extrusion machining.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,651,878-885.
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| MLA |
Liu Y,et al."A new method for grain refinement in magnesium alloy: High speed extrusion machining".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 651(2016):878-885.
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