中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 金属研究所
  3. 中国科学院金属研究所
Effects of defects and microstructures on tensile properties of selective laser melted Ti6Al4V alloys fabricated in the optimal process zone

文献类型：期刊论文

作者Meng, L. X.2,3; Yang, H. J.2,3; Ben, D. D.2,3; Ji, H. B.3; Lian, D. L.3; Ren, D. C.3; Li, Y.3; Bai, T. S.3; Cai, Y. S.3; Chen, J.1
刊名MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
出版日期2022-01-07
卷号830页码:9
ISSN号0921-5093
关键词Selective laser melting Ti6Al4V Optimization Defects Microstructure
DOI10.1016/j.msea.2021.142294
通讯作者Yang, H. J.(hjyang@imr.ac.cn) ; Ji, H. B.(hbji@imr.ac.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn)
英文摘要The aim of selective laser melting (SLM) technology is to obtain high quality workpieces through optimization of processing parameters. However, the defects and microstructures are simultaneously changed with the change of process parameters, so their effects are hard to discuss separately. To meet this challenge, 24 combinations of laser power and scanning speed were designed to fabricate the SLM manufactured Ti6Al4V alloy, and the volumetric energy density (VED) of them ranges from 30 J/mm(3) to 100 J/mm(3). It is found that with the increase of VED the prior beta boundary tended to be straighter and wider, while the morphology of alpha lamella did no change distinctively. The porosity varies from nearly 0% to 4% in this process zone, which has significant effects on the tensile properties. For samples with high porosity (0.25%-4%), the influence of defects covered the influence of microstructure, leading to stochastic ultimate tensile strength and stably low elongation. For samples with low porosity (0.01%-0.25%) and extra-low porosity (<0.01%), the stably high ultimate tensile strength revealed the slight difference between microstructures. The poor productivity of elongation for samples with low and extra low porosity was also discussed.
资助项目National Natural Science Foundation of China[51975552] ; COMAC Shanghai Aircraft Manufacturing Co., Ltd[COMAC-SFGS-2018-2663] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2017235] ; Natural Science Foundation of Liaoning Province[2020-MS-007] ; CAS Interdisciplinary Innovation Team[JCTD-2020-10]
WOS研究方向Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
出版者ELSEVIER SCIENCE SA
WOS记录号WOS:000718392500002
资助机构National Natural Science Foundation of China ; COMAC Shanghai Aircraft Manufacturing Co., Ltd ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Natural Science Foundation of Liaoning Province ; CAS Interdisciplinary Innovation Team
源URL[http://ir.imr.ac.cn/handle/321006/167393]  
专题金属研究所_中国科学院金属研究所
通讯作者Yang, H. J.; Ji, H. B.; Zhang, Z. F.
作者单位1.COMAC Shanghai Aircraft Mfg Co Ltd, Shanghai 201324, Peoples R China
2.Univ Chinese Acad Sci, Dept Mat Sci & Engn, Shenyang 110016, Peoples R China
3.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式
GB/T 7714		 Meng, L. X.,Yang, H. J.,Ben, D. D.,et al. Effects of defects and microstructures on tensile properties of selective laser melted Ti6Al4V alloys fabricated in the optimal process zone[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2022,830:9.
APA Meng, L. X..,Yang, H. J..,Ben, D. D..,Ji, H. B..,Lian, D. L..,...&Zhang, Z. F..(2022).Effects of defects and microstructures on tensile properties of selective laser melted Ti6Al4V alloys fabricated in the optimal process zone.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,830,9.
MLA Meng, L. X.,et al."Effects of defects and microstructures on tensile properties of selective laser melted Ti6Al4V alloys fabricated in the optimal process zone".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 830(2022):9.

入库方式： OAI收割

来源：金属研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。