Index Catalog // MDR

Description/Abstract:: Melt pool dimensions (depth: <i>D</i> and width: <i>W</i>) are strongly correlated with defects generated in laser powder bed fusion. The...
Keyword:: Fresnel laser reflection model, Laser powder bed fusion, Melt pool shape, Multi-physics CFD simulation, Mushy zone flow resistance, and Recoil pressure
Resource Type:: Article
Author:: Jun Katagiri, Masahiro Kusano,, Sukeharu Nomoto, and Makoto Watanabe
Journal:: Case Studies in Thermal Engineering
Date Uploaded:: 10/10/2023
Date Modified:: 10/10/2023

Description/Abstract:: The continuous cooling transformation (CCT) diagram of steels is very important in considering the phase transformation depending on the ...
Keyword:: CCT
Resource Type:: Article
Author:: Satoshi Minamoto, Susumu Tsukamoto, Tadashi Kasuya, Makoto Watanabe, and Masahiko Demura
Date Uploaded:: 09/02/2023
Date Modified:: 20/03/2024

Description/Abstract:: Solute segregation significantly affects material properties and is a critical issue in the laser powder-bed fusion (LPBF) additive manuf...
Keyword:: Computational thermal-fluid dynamics simulation, Hastelloy-X nickel-based superalloy, Laser powder-bed fusion, Phase-field method, and Solute element segregation
Resource Type:: Article
Author:: Masayuki Okugawa, Kenji Saito, Haruki Yoshima, Katsuhiko Sawaizumi, Sukeharu Nomoto, Makoto Watanabe, Takayoshi Nakano, and Yuichiro Koizumi
Journal:: Additive Manufacturing
Date Uploaded:: 02/04/2024

Description/Abstract:: Various defects are produced during laser powder bed fusion (L-PBF) process, and can affect the quality of the fabricated part. Past stud...
Keyword:: discrete-element method, laser powder bed fusion, multiphysics CFD simulation, packing fraction, packing homogeneity, particle size, and powder spreading
Resource Type:: Article
Author:: Jun Katagiri, Sukeharu Nomoto, Masahiro Kusano, and Makoto Watanabe
Journal:: Journal of Manufacturing and Materials Processing
Date Uploaded:: 05/04/2024

Description/Abstract:: To understand the correlation between process, structures, and properties in laser powder bed fusion (L-PBF), it is essential to use nume...
Keyword:: Bayesian optimization, Heat source model, Laser powder bed fusion, Laser scanning conditions, Multiple linear regression, and Thermal analysis
Resource Type:: Article
Author:: Masahiro Kusano and Makoto Watanabe
Journal:: Integrating Materials and Manufacturing Innovation
Date Uploaded:: 09/04/2024

Description/Abstract:: In this work, the purpose of the current study is to understand the effects of time per layer and part geometry on microcracking behavior...
Keyword:: Constricted geometry, Inconel 738 LC, Laser powder bed fusion, Microcracking, Thermal analysis, and Time per layer
Resource Type:: Article
Author:: Masahiro Kusano, Yusuke Takata, Atsushi Yumoto, and Makoto Watanabe
Journal:: Additive Manufacturing
Date Uploaded:: 10/04/2024

Description/Abstract:: Aiming to designing the aging heat treatment conditions to maximize the 0.2 % proof stress of γ-γ′ two-phase Ni-based superalloys, we dev...
Keyword:: Image analysis, Ni-Al alloy, Phase field simulation, and γ-γ′two-phase
Resource Type:: Article
Author:: Toshio Osada, Toshiyuki Koyama, Dmitry S. Bulgarevich, Satoshi Minamoto, Makoto Osawa, Makoto Watanabe, Kyoko Kawagishi, and Masahiko Demura
Date Uploaded:: 01/02/2023
Date Modified:: 02/05/2024

Description/Abstract:: The layer-by-layer laser powder bed fusion (L-PBF) process was applied to fabricate functionally graded multi-materials (FGMs) of nickel-...
Keyword:: Compositional gradient, Functionally graded materials, Laser powder bed fusion process, Microstructure, and Ni-Ti alloy
Resource Type:: Article
Author:: Phuangphaga Daram, Takanobu Hiroto, and Makoto Watanabe
Journal:: Journal of Materials Research and Technology
Date Uploaded:: 21/06/2024

Description/Abstract:: In laser metal-based powder-bed fusion additive manufacturing, it is important to know the laser absorptivity of metal powder to elucidat...
Keyword:: Ti-6Al-4V powder, additive manufacturing, laser absorptivity, and powder-bed fusion
Resource Type:: Article
Author:: Hiroshi Honda and Makoto Watanabe
Journal:: MATERIALS TRANSACTIONS
Date Uploaded:: 02/09/2024

Description/Abstract:: Tungsten (W) has a high melting point, excellent thermal conductivity, and irradiation resistance, making it the most promising plasma fa...
Keyword:: atmospheric plasma spray process, divertor, friction stir processing, microstructure, nuclear fusion reactor, and tungsten
Resource Type:: Article
Author:: Phuangphaga Daram, Yoshiaki Morisada, Takuya Ogura, Masahiro Kusano, JuHyeon Yu, Makoto Fukuda, Hidetoshi Fujii, Seiji Kuroda, and Makoto Watanabe
Journal:: Journal of Thermal Spray Technology
Date Uploaded:: 13/09/2024

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