A new method for grain refinement in magnesium alloy: High speed extrusion machining
文献类型：期刊论文
| 作者 | Liu Y; Cai SL ; Dai LH(戴兰宏)
|
| 刊名 | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| 出版日期 | 2016-01-10 |
| 卷号 | 651页码:878-885 |
| 通讯作者邮箱 | liuyao@ustb.edu.cn |
| ISSN号 | 0921-5093 |
| 关键词 | High speed extrusion machining Magnesium alloy Grain refinement Dynamic recrystallization |
| 通讯作者 | Liu, Y (reprint author), Univ Sci & Technol Beijing, Sch Math & Phys, Beijing 100083, Peoples R China. |
| 产权排序 | [Liu, Yao] Univ Sci & Technol Beijing, Sch Math & Phys, Beijing 100083, Peoples R China; [Cai, Songlin] State Grid Corp China, China Elect Power Res Inst, Beijing 100192, Peoples R China; [Dai, Lanhong] Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China |
| 中文摘要 | 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. |
| 类目[WOS] | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| 分类号 | 一类 |
| 研究领域[WOS] | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 关键词[WOS] | SEVERE PLASTIC-DEFORMATION ; BULK NANOSTRUCTURED MATERIALS ; HIGH-PRESSURE TORSION ; AZ31 MG ALLOY ; MECHANICAL-PROPERTIES ; ELEVATED-TEMPERATURES ; STRAIN ; MICROSTRUCTURE ; EVOLUTION ; METALS |
| 收录类别 | SCI ; EI |
| 原文出处 | http://dx.doi.org/10.1016/j.msea.2015.11.046 |
| 语种 | 英语 |
| WOS记录号 | WOS:000367486800100 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/58645]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Liu Y,Cai SL,Dai LH. 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. |
| APA | Liu Y,Cai SL,&戴兰宏.(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. |
| 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. |
入库方式： OAI收割
来源：力学研究所
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