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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 AuthorZhao Chunling(capi@608.163.net)
2021-08-01
Source PublicationRARE METAL MATERIALS AND ENGINEERING
ISSN1002-185X
Volume50Issue:8Pages:2841-2849
AbstractSelective 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.
Keywordselective laser melting defect laser power scanning speed laser energy density
Indexed BySCI
Language英语
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000695646700025
PublisherNORTHWEST INST NONFERROUS METAL RESEARCH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/166924
Collection中国科学院金属研究所
Corresponding AuthorZhao Chunling
Affiliation1.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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