Innovation near-net-shape casting process of manganese metal based on grain refinement principle
文献类型：期刊论文
| 作者 | Chen, Yuyao1,2; Qian, Guoyu1; Wang, Zhi1; Peng, Hongbing2; Pang, Sheng1; Wang, Hao1; Qian, Weitao1 |
| 刊名 | Journal of Alloys and Compounds
 |
| 出版日期 | 2022-12-20 |
| 卷号 | 928 |
| ISSN号 | 9258388 |
| 关键词 | Energy conservation - Fracture mechanics - Grain refinement - Grain size and shape - Heat transfer - Metal recovery - Metallurgy - Metals - Microstructure - Nucleation - Structural properties |
| DOI | 10.1016/j.jallcom.2022.167235 |
| 英文摘要 | The heat loss in the process of casting Mn metal and the generation of Mn powder in the process of breaking Mn ingots have always been difficult problems in the industry. In order to realize the energy saving and loss reduction in the process of casting manganese metal, we propose a concept of near-net-shape casting of Mn metal based on Grain Refinement Principle, in which the Mn metal melt is cast to small product size and heat recovery is realized through water heat transfer. The challenge of this method is to control solidification structure and improve mechanical properties using small-size casting mould. Present work focuses on the study of the solidification microstructure evolution mechanism of Mn metal and its structure-activity relationship with mechanical properties of small size abrasives casting process. The results showed that the average grain size of Mn metal first decreases and then increases as the decrease in casting temperature. The average grain size is the smallest when the casting temperature is 1533 K. The grain size of Mn metal is mainly affected by its critical nucleation radius. The relationship between the critical nucleation radius of Mn metal and its average grain size is established thatr=69.15exp鈭抏xp0.05r*鈭?7.16;R2=0.9460. The smaller the critical nucleation size is, the more dendrite fragments there are to achieve grain refinement. The hall Petch relationship between the average grain size and the comprehensive strength of Mn metal under different casting conditions is established that蟽=1755.34d鈭?/2鈭?37.27,R2=0.93457, the average size of the formula is 50鈥?0 碌m Mn metal has good applicability. The mechanical properties of the single 尾-Mn crystalline form are significantly better than those of the mixed 伪 + 尾 crystalline form with a casting temperature below 1573 K. The influence of solidification structure on the mechanical properties of Mn metal is much more significant than that of crystal form. This primary molding technology is also applicable to the casting process of metals with high intrinsic brittleness, such as silicon, germanium, and titanium, so it has a broad application prospect. 漏 2022 Elsevier B.V. |
| 学科主题 | Crystal Structure |
| 项目编号 | This work was financially supported by National Natural Science Foundation of China (Nos. 51934006 ). |
| 出版者 | Elsevier Ltd |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/61233]  |
| 作者单位 | 1.CAS Key Laboratory of Green Process and EngineeringNational Engineering Research Center of Green Recycling for Strategic Metal Resources, Institute of Process Engineering, Chinese Academy of Sciences, Beijing; 100190, China 2.School of Metallurgical and Materials Engineering, Jiangsu University of Science and Technology, Jiangsu, Zhangjiagang; 215600, China |
| 推荐引用方式 GB/T 7714 | Chen, Yuyao,Qian, Guoyu,Wang, Zhi,et al. Innovation near-net-shape casting process of manganese metal based on grain refinement principle[J]. Journal of Alloys and Compounds,2022,928. |
| APA | Chen, Yuyao.,Qian, Guoyu.,Wang, Zhi.,Peng, Hongbing.,Pang, Sheng.,...&Qian, Weitao.(2022).Innovation near-net-shape casting process of manganese metal based on grain refinement principle.Journal of Alloys and Compounds,928. |
| MLA | Chen, Yuyao,et al."Innovation near-net-shape casting process of manganese metal based on grain refinement principle".Journal of Alloys and Compounds 928(2022). |
入库方式： OAI收割
来源：过程工程研究所
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