| Investigation on Relationship between Defects and Paramaters for Titanium Alloy Fabricated by Selective Laser Melting | |
| Zhao Chunling1; Li Wei1; Wang Qiang1; Wang Yujia2; Zhao Yu1; Di Shixiong1; Ren Dechun2; Ji Haibin2 | |
| Corresponding Author | Zhao Chunling(capi@608.163.net) |
| 2021-08-01 | |
| Source Publication | RARE METAL MATERIALS AND ENGINEERING
 |
| ISSN | 1002-185X |
| Volume | 50Issue:8Pages:2841-2849 |
| Abstract | Selective laser melting (SLM) technology can realize the direct fabrication of products with complex shape, high dimensional accuracy, and excellent mechanical properties. However, improper selection of fabrication parameters of SLM will introduce defects in the products. For the problem of defects, this investigation studied the influence of the two main fabrication parameters, laser power and scanning speed, on the type, size and quantity of internal defects in fabricated titanium alloy, and explored the evolution of defects with fabrication parameters. The results show that there are mainly irregular shape and regular spherical shape defects in the titanium alloy fabricated by SLM. The area with low laser power (<= 130 W) and high scanning speed (>= 900 mm/s) is mainly irregular shape defects. Insufficient energy is the main reason for the formation of this type defect. The area with high laser power (>= 190 W), low scanning speed (<= 600 mm/s) is mainly regular spherical shape defects. The gasification of alloying elements caused by excessive energy is the main reason for the formation of this type defect. With the increasing of laser energy density, the SLM fabricated titanium alloy processing map was drawn according to the evolution law of defects. The evolution of defects presents three stages for the area of irregular shape defects gradually decreasing, micro-scale irregular defects to micro-scale regular spherical defects, and regular spherical defects gradually growing up. |
| Keyword | selective laser melting defect laser power scanning speed laser energy density |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000695646700025 |
| Publisher | NORTHWEST INST NONFERROUS METAL RESEARCH |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/166922 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhao Chunling |
| Affiliation | 1.AECC Hunan Aviat Powerplant Res Inst, Zhuzhou 412002, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Zhao Chunling,Li Wei,Wang Qiang,et al. Investigation on Relationship between Defects and Paramaters for Titanium Alloy Fabricated by Selective Laser Melting[J]. RARE METAL MATERIALS AND ENGINEERING,2021,50(8):2841-2849. |
| APA | Zhao Chunling.,Li Wei.,Wang Qiang.,Wang Yujia.,Zhao Yu.,...&Ji Haibin.(2021).Investigation on Relationship between Defects and Paramaters for Titanium Alloy Fabricated by Selective Laser Melting.RARE METAL MATERIALS AND ENGINEERING,50(8),2841-2849. |
| MLA | Zhao Chunling,et al."Investigation on Relationship between Defects and Paramaters for Titanium Alloy Fabricated by Selective Laser Melting".RARE METAL MATERIALS AND ENGINEERING 50.8(2021):2841-2849. |
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