Knowledge Management System Of Institute of process engineering,CAS
| Fabrication of Ti-6Al-4V alloy powder by a novel sintering-deoxygenation process | |
| Zhang, Mingyuan1,2; Cai, Taotao1,2; Lu, Weiliang1,2; Zheng, Shili1,2; Zhang, Ying1,2,3; Zhang, Yi1,2 | |
| 2023-02-15 | |
| Source Publication | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| ISSN | 0925-8388 |
| Volume | 935Pages:14 |
| Abstract | Given the high cost of fabricating the Ti-6Al-4V alloy powder by the traditional hydriding-dehydriding and atomization methods, a novel sintering-deoxygenation process was proposed and studied in this research. With the help of the developed deoxygenation treatment, value-added raw materials such as Ti sponge can be substituted by low-cost and low-grade materials with high oxygen content. In addition, sintering in a solid state saves a significant amount of processing energy compared to alloying above the melting point of Ti in the conventional alloy production process. This paper prepared six sintering precursors with different initial compositions and oxygen contents using the low-valued raw materials of crude titanium, crude vanadium, V2O3, Al powder, and Al2O3 powder. These precursors' sintering performances on shrinkage, phase composition, microstructure, and porosity were investigated. The results show that the sintering shrinkage is positively correlated with the sintering temperature and holding time and is also affected by the raw materials. The pellet made by mixed crude titanium and AlV master alloy showed the largest shrinkage and the densest bulk. The various combinations of the raw materials led to the changes in the oxygen contents in the precursors, the alpha-beta phase ratio, and the shift of the diffraction peaks of the alpha-phase. The dissolving of the AlV master alloy and the formation of the Ti3Al intermediate phase took place during sintering due to diffusion. Sintering at 900-1000 degrees C is critical for elemental diffusion and densifi-cation, and sintering at higher temperatures is decisive for microstructure homogenization and further densification. Using the hydrogen-assisted Mg deoxygenation method, all the sintered samples could be treated to an oxygen level of around 0.4 wt% regardless of oxygen content in precursors. The contents of Ti, Al, V, and Fe in the obtained Ti-6Al-4V powders met the requirements of GB/T 34486-2017. This research has demonstrated the feasibility of fabricating Ti-6Al-4V alloy powder by the novel sintering-deoxygenation process.(c) 2022 Elsevier B.V. All rights reserved. |
| Keyword | Ti-6Al-4V Powder fabrication Sintering Deoxygenation |
| DOI | 10.1016/j.jallcom.2022.168113 |
| Language | 英语 |
| WOS Keyword | MECHANICAL-PROPERTIES ; TITANIUM ; REDUCTION ; TI ; ATOMIZATION ; METALLURGY |
| Funding Project | Key Research Program of the Chinese Academy of Sciences[ZDRW-CN-2021-3] ; Youth Innovation Promotion Association CAS[2018065] ; Natural Science Foundation of China[51771179] ; Beijing Natural Science Foundation[2192056] ; State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization |
| WOS Research Area | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| Funding Organization | Key Research Program of the Chinese Academy of Sciences ; Youth Innovation Promotion Association CAS ; Natural Science Foundation of China ; Beijing Natural Science Foundation ; State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization |
| WOS ID | WOS:000890496700001 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/55984 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Zhang, Ying |
| Affiliation | 1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Res Ctr Green Recycling Strateg Met Reso, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.State Key Lab Vanadium & Titanium Resources Compre, Panzhihua 617000, Sichuan, Peoples R China |
| Recommended Citation GB/T 7714 | Zhang, Mingyuan,Cai, Taotao,Lu, Weiliang,et al. Fabrication of Ti-6Al-4V alloy powder by a novel sintering-deoxygenation process[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2023,935:14. |
| APA | Zhang, Mingyuan,Cai, Taotao,Lu, Weiliang,Zheng, Shili,Zhang, Ying,&Zhang, Yi.(2023).Fabrication of Ti-6Al-4V alloy powder by a novel sintering-deoxygenation process.JOURNAL OF ALLOYS AND COMPOUNDS,935,14. |
| MLA | Zhang, Mingyuan,et al."Fabrication of Ti-6Al-4V alloy powder by a novel sintering-deoxygenation process".JOURNAL OF ALLOYS AND COMPOUNDS 935(2023):14. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment