Q
Qilin Guo
Researcher at Missouri University of Science and Technology
Publications - 33
Citations - 1335
Qilin Guo is an academic researcher from Missouri University of Science and Technology. The author has contributed to research in topics: Microstructure & Scanning electron microscope. The author has an hindex of 12, co-authored 33 publications receiving 694 citations. Previous affiliations of Qilin Guo include University of Wisconsin-Madison & Harbin Institute of Technology.
Papers
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Journal ArticleDOI
Transient Dynamics of Powder Spattering in Laser Powder Bed Fusion Additive Manufacturing Process Revealed by In-Situ High-Speed High-Energy X-Ray Imaging
Qilin Guo,Cang Zhao,Luis I. Escano,Zachary Young,Lianghua Xiong,Kamel Fezzaa,Wes Everhart,Ben Brown,Tao Sun,Lianyi Chen +9 more
TL;DR: In this paper, the dynamics of powder spattering in the laser powder bed fusion (LPBF) additive manufacturing (AM) process were investigated with in-situ high-speed high-energy x-ray imaging.
Journal ArticleDOI
Pore elimination mechanisms during 3D printing of metals.
S. Mohammad H. Hojjatzadeh,Niranjan D. Parab,Wentao Yan,Qilin Guo,Lianghua Xiong,Cang Zhao,Minglei Qu,Luis I. Escano,Xianghui Xiao,Kamel Fezzaa,Wes Everhart,Tao Sun,Lianyi Chen +12 more
TL;DR: It is found that the high thermocapillary force, induced by the high temperature gradient in the laser interaction region, can rapidly eliminate pores from the melt pool during the LPBF process.
Journal ArticleDOI
Direct Observation of Pore Formation Mechanisms during LPBF Additive Manufacturing Process and High Energy Density Laser Welding
S. Mohammad H. Hojjatzadeh,S. Mohammad H. Hojjatzadeh,Niranjan D. Parab,Qilin Guo,Minglei Qu,Lianghua Xiong,Cang Zhao,Luis I. Escano,Luis I. Escano,Kamel Fezzaa,Wes Everhart,Tao Sun,Lianyi Chen,Lianyi Chen +13 more
TL;DR: In this article, the pore formation mechanism during the laser powder bed fusion (LPBF) process is investigated. And the results provide direct evidence and insight into pore forming mechanisms during the LPBF process, which may guide the development of pore elimination/mitigation approaches.
Journal ArticleDOI
In-situ full-field mapping of melt flow dynamics in laser metal additive manufacturing
Qilin Guo,Qilin Guo,Cang Zhao,Minglei Qu,Minglei Qu,Lianghua Xiong,S. Mohammad H. Hojjatzadeh,S. Mohammad H. Hojjatzadeh,Luis I. Escano,Luis I. Escano,Niranjan D. Parab,Kamel Fezzaa,Tao Sun,Lianyi Chen,Lianyi Chen +14 more
TL;DR: In this article, Zhao et al. reported in-situ characterization of melt-flow dynamics in every location of the entire melt pool in laser metal additive manufacturing by populous and uniformly dispersed micro-tracers through high-resolution synchrotron x-ray imaging.
Journal ArticleDOI
In-situ characterization and quantification of melt pool variation under constant input energy density in laser powder bed fusion additive manufacturing process
Qilin Guo,Cang Zhao,Minglei Qu,Lianghua Xiong,Luis I. Escano,S. Mohammad H. Hojjatzadeh,Niranjan D. Parab,Kamel Fezzaa,Wes Everhart,Tao Sun,Lianyi Chen +10 more
TL;DR: In this article, the authors report the direct observation and quantification of melt pool variation during the laser powder bed fusion (LPBF) additive manufacturing process under constant input energy density by in-situ high-speed high-energy x-ray imaging.