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Defect-healing of a laser-powder bed fusion Ti6Al4V alloy via electro-assisted micro-forging

文献类型：期刊论文

作者Meng, L. X.1,6; Yang, H. J.6,7; Wang, S. G.5; Ji, H. B.1,6; Shao, X. H.1,5; Zhang, Z. J.1,6; Ren, D. C.1,6; Zhang, X.1,6; Yang, J. B.1,6; An, X. H.4
刊名MATERIALS CHARACTERIZATION
出版日期2023-11-01
卷号205页码:15
关键词Laser-powder bed fusion Ti6Al4V Electro-assisted micro-forging Defect-healing Mechanical properties
ISSN号1044-5803
DOI10.1016/j.matchar.2023.113298
通讯作者Yang, H. J.(yanghj@szlab.ac.cn) ; De Hosson, J. Th. M.(j.t.m.de.hosson@rug.nl) ; Zhang, Z. F.(zhfzhang@imr.ac.cn)
英文摘要In recent years, the concept of hybrid manufacturing has been proposed to heal the defects in additive manu-factured (AM) materials, taking advantage of both the AM technique and additional secondary processes such as hot forging. However, the healing mechanism of defects, as well as the relationship between defects elimination and microstructure evolution need to be further studied. In this work, we designed laser-powder bed fusion (L-PBF) Ti6Al4V samples with high initial porosity, making it easier to trace the pores during the quasi in-situ X-ray tomography (XRT) observation. The samples were conducted hot forging by Gleeble-3800 system, which is named as electro-assisted micro-forging (EAMF) treatment, considering the characteristic of this process is to directly electrify the specimen to generate Joule heat. The results show that the porosity was effectively reduced by combining effects of electric current, heat energy and compressive stress during EAMF. Simultaneous enhancement of strength and ductility was realized. The defect-healing mechanism that comprising various stages was comprehensively disclosed. The competitive relationship between defect-healing and microstructure coarsening was revealed, which has a guiding effect on the subsequent optimization of process parameters.
资助项目National Natural Science Foundation of China[51975552] ; National Natural Science Foundation of China[51230002] ; Natural Science Foundation of Liaoning Province[2020 -MS -007] ; CAS Interdisciplinary Innovation Team[JCTD-2020-10] ; KC Wong Education Foundation[GJTD-2020-09] ; Australian Research Council[DP230101228] ; University of Sydney under the Robinson Fellowship Scheme
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:001106833400001
出版者ELSEVIER SCIENCE INC
资助机构National Natural Science Foundation of China ; Natural Science Foundation of Liaoning Province ; CAS Interdisciplinary Innovation Team ; KC Wong Education Foundation ; Australian Research Council ; University of Sydney under the Robinson Fellowship Scheme
源URL[http://ir.imr.ac.cn/handle/321006/177397]  
专题金属研究所_中国科学院金属研究所
通讯作者Yang, H. J.; De Hosson, J. Th. M.; Zhang, Z. F.
作者单位1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
2.Univ Groningen, Zernike Inst Adv Mat, Dept Appl Phys, NL-9747 AG Groningen, Netherlands
3.Univ Groningen, Dept Adv Prod Engn, Engn & Technol Inst Groningen, NL-9747 AG Groningen, Netherlands
4.Univ Sydney, Sch Aerosp Mech & Mechatron Engn, Sydney, NSW 2006, Australia
5.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
6.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China
7.Suzhou Lab, Suzhou 215028, Peoples R China
推荐引用方式
GB/T 7714		 Meng, L. X.,Yang, H. J.,Wang, S. G.,et al. Defect-healing of a laser-powder bed fusion Ti6Al4V alloy via electro-assisted micro-forging[J]. MATERIALS CHARACTERIZATION,2023,205:15.
APA Meng, L. X..,Yang, H. J..,Wang, S. G..,Ji, H. B..,Shao, X. H..,...&Zhang, Z. F..(2023).Defect-healing of a laser-powder bed fusion Ti6Al4V alloy via electro-assisted micro-forging.MATERIALS CHARACTERIZATION,205,15.
MLA Meng, L. X.,et al."Defect-healing of a laser-powder bed fusion Ti6Al4V alloy via electro-assisted micro-forging".MATERIALS CHARACTERIZATION 205(2023):15.

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来源：金属研究所

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