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Microstructures, Thermal and Mechanical Properties of Pure Tungsten-A Comparison Between Selective Laser Melting and Hot Rolling
Wang, Chong1; Chen, Daobing1; Zhou, Yan2; Xie, Zhuoming3; Fang, Qianfeng3; Wen, Shifeng1; Yan, Chunze1
2022-12-01
Source PublicationCHINESE JOURNAL OF MECHANICAL ENGINEERING
ISSN1000-9345
Corresponding AuthorZhou, Yan(zhouyan@cug.edu.cn) ; Wen, Shifeng(roya_wen@hust.edu.cn)
AbstractA comparative study on the influence of different manufacturing methods (selective laser melting and hot rolling) on the microstructure, mechanical and thermal behaviours of tungsten (W) was presented for the first time. The results indicated that the selective laser melting (SLM) W exhibited a finer grain sizes, a lower strength ductility, hardness and thermal conductivity compared to hot-rolled W. The main reason for this result was that the laser underwent rapid heating and cooling when it was used to melt W powder with high energy density, resulting in large internal stress in the sample after manufacturing. Subsequently, the internal stress was released, leading to the generation of micro-cracks at the grain boundaries, thereby affecting the performance of SLM W samples. In addition, the higher fraction of high-angle grain boundaries (HAGBs) of SLM W was found to be the key factor for intrinsic brittleness. Because the HAGBs are the preferred crack paths, which could promote crack propagation and decrease fracture energy.
KeywordTungsten (W) Selective laser melting (SLM) Hot rolling Microstructure Thermal conductivity Mechanical property
DOI10.1186/s10033-022-00712-5
WOS KeywordTENSILE PROPERTIES ; SHOCK RESISTANCE ; BEHAVIOR ; PHASE ; DENSIFICATION ; DISLOCATION ; SUPPRESSION ; PERFORMANCE ; COMPOSITE ; EVOLUTION
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[U1808216] ; Hubei Provincial Natural Science Foundation of China[2020CFB667] ; Hubei Provincial Key Research and Development Program of China[2020BAB045] ; Wuhan Second Ship Design and Research Institute[YT19201903]
Funding OrganizationNational Natural Science Foundation of China ; Hubei Provincial Natural Science Foundation of China ; Hubei Provincial Key Research and Development Program of China ; Wuhan Second Ship Design and Research Institute
WOS Research AreaEngineering
WOS SubjectEngineering, Mechanical
WOS IDWOS:000790790200004
PublisherSPRINGER
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/131534
Collection中国科学院合肥物质科学研究院
Corresponding AuthorZhou, Yan; Wen, Shifeng
Affiliation1.Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mold Technol, Wuhan 430074, Peoples R China
2.China Univ Geosci, Fac Engn, Wuhan 430074, Peoples R China
3.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China
Recommended Citation
GB/T 7714
Wang, Chong,Chen, Daobing,Zhou, Yan,et al. Microstructures, Thermal and Mechanical Properties of Pure Tungsten-A Comparison Between Selective Laser Melting and Hot Rolling[J]. CHINESE JOURNAL OF MECHANICAL ENGINEERING,2022,35.
APA Wang, Chong.,Chen, Daobing.,Zhou, Yan.,Xie, Zhuoming.,Fang, Qianfeng.,...&Yan, Chunze.(2022).Microstructures, Thermal and Mechanical Properties of Pure Tungsten-A Comparison Between Selective Laser Melting and Hot Rolling.CHINESE JOURNAL OF MECHANICAL ENGINEERING,35.
MLA Wang, Chong,et al."Microstructures, Thermal and Mechanical Properties of Pure Tungsten-A Comparison Between Selective Laser Melting and Hot Rolling".CHINESE JOURNAL OF MECHANICAL ENGINEERING 35(2022).
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