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Advances in polishing of internal structures on parts made by laser-based powder bed fusion

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0724-0

Abstract: Considering the manufacturing of inner structures, laser-based powder bed fusion (L-PBF) is an attractive

Keywords： laser-based powder bed fusion     polishing     internal structures     surface quality     surface features     post    

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Orientation effect of electropolishing characteristics of 316L stainless steel fabricated by laser powderbed fusion

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 3,   Pages 580-592 doi: 10.1007/s11465-021-0633-7

Abstract: effect of electropolishing characteristics on different surfaces of 316L stainless steel fabricated by laserpowder bed fusion (L-PBF), considering that the rough surface of 3D printed parts is a key factor limitingelectropolishing characteristics on the different surfaces corresponding to the building orientation in selective laser

Keywords： electropolishing     laser powder bed fusion     316L stainless steel     corrosion resistance     microstructure    

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alloying of CoCrFeMnNi high-entropy alloy from elemental feedstock toward high-throughput synthesis via laserpowder bed fusion

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0727-x

Abstract: In this work, laser powder bed fusion (L-PBF) is adopted for the in situ synthesis of equiatomicCoCrFeMnNi HEA from elemental powder mixtures.

Keywords： laser powder bed fusion (L-PBF)     in situ alloying     high-entropy alloys     heat treatment     rapid    

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Development of lunar regolith composite and structure via laser-assisted sintering

Frontiers of Mechanical Engineering doi: 10.1007/s11465-021-0662-2

Abstract: In this paper, a laser-assisted additive manufacturing process is developed to fabricate lunar regolithcomposites reaches 9.248 MPa, and the maximum depth of surface variation is 120.79 μm, which indicates poor powderfusion and sintering quality.Thereafter, the mechanical properties of laser-sintered lunar regolith composites are implemented toThe effectiveness and the feasibility of this laser-assisted process are potentially developed for future

Keywords： in situ manufacturing     laser-assisted powder fusion process     mechanical properties     topological    

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Formation Process and Mechanical Deformation Behavior of a Novel Laser-Printed Compression-Induced Twisting-Compliant Article

Jie Gao, Dongdong Gu, Chenglong Ma, Donghua Dai, Lixia Xi, Kaijie Lin, Tong Gao, Jihong Zhu, Yuexin Du

Engineering 2022, Volume 15, Issue 8,   Pages 133-142 doi: 10.1016/j.eng.2021.03.032

Abstract: was designed based on the freedom and constraint topology (FACT) method and manufactured by means of laserpowder bed fusion (LPBF).Within the range of optimized laser powers from 375 to 450 W and with the densification level of theIncreased laser power led to the elimination of residual metallurgical pores within the inclined strutsThe accumulated compressive strain of the optimally printed CIT mechanism using a laser power of 450

Keywords： Laser 3D printing     Laser powder bed fusion     Compression-induced twisting-compliant mechanism     Compression–torsion    

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Development of Micro Selective Laser Melting: The State of the Art and Future Perspectives Review

Balasubramanian Nagarajan, Zhiheng Hu, Xu Song, Wei Zhai, Jun Wei

Engineering 2019, Volume 5, Issue 4,   Pages 702-720 doi: 10.1016/j.eng.2019.07.002

Abstract: Selective laser melting (SLM) is a common AM technique that is based on powder-bed fusion (PBF) to processresearch works and commercial systems for the fabrication of microscale parts using SLM and selective laser, laser optics, and powder particle size, this paper details potential future directions.A detailed review of existing recoating methods in powder-bed techniques is conducted, along with a descriptionof emerging efforts to implement dry powder dispensing methods in the AM domain.

Keywords： Additive manufacturing     Selective laser melting     Microfabrication     Hybrid processing     Powder-bed recoating    

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Two-dimensional modeling of sintering of a powder layer on top of nonporous substrate

Tiebing CHEN, Yuwen ZHANG,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 2,   Pages 143-148 doi: 10.1007/s11465-010-0006-0

Abstract: Selective laser sintering (SLS) of a two-component metal powder layer on the top of multiple sinteredlayers by a moving Gaussian laser beam is modeled.The loose metal powder layer is composed of a powder mixture with significantly different melting pointsThe effects of the porosity and the thickness of the atop loose powder layer with different numbers ofthe existing sintered metal powder layers below on the sintering process are numerically investigated

Keywords： laser     sintering     melting     solidification     heat transfer    

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Effect of process parameters on the density and porosity of laser melted AlSi10Mg/SiC metal matrix composite

Omotoyosi H. FAMODIMU, Mark STANFORD, Chike F. ODUOZA, Lijuan ZHANG

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 4,   Pages 520-527 doi: 10.1007/s11465-018-0521-y

Abstract:

Laser melting of aluminium alloy—AlSi10Mg has increasingly been used to create specialised productsin various industrial applications, however, research on utilising laser melting of aluminium matrixThis has been attributed to the complexity of the laser melting process, metal/ceramic feedstock forthe process and the reaction of the feedstock material to the laser.The effects of several parameters of the laser melting process on the mechanical blended composite were

Keywords： selective laser melting     additive manufacturing     mechanical alloying     powder metallurgy     aluminium metal    

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Prediction of the Thermal History and Solidification Microstructure of Inconel 718 Products Made by LaserPowder-Bed Fusion

Patcharapit Promoppatum, Shi-Chune Yao, P. Chris Pistorius, Anthony D. Rollett

Engineering 2017, Volume 3, Issue 5,   Pages 685-694 doi: 10.1016/J.ENG.2017.05.023

Abstract: model and the Rosenthal equation are used to study the thermal and microstructural phenomena in the laserpowder-bed fusion of Inconel 718.

Keywords： Additive manufacturing     Finite-element modeling     Rosenthal equation     Microstructure     Thermal behavior     Inconel 718    

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Manufacturing cost constrained topology optimization for additive manufacturing

Jikai LIU, Qian CHEN, Xuan LIANG, Albert C. TO

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 2,   Pages 213-221 doi: 10.1007/s11465-019-0536-z

Abstract: This paper presents a manufacturing cost constrained topology optimization algorithm considering the laserpowder bed additive manufacturing process.Technically, the additive manufacturing cost model for laser powder bed-based process is established

Keywords： topology optimization     manufacturing cost     additive manufacturing     powder bed    

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Characteristics of Inconel Powders for Powder-Bed Additive Manufacturing

Quy Bau Nguyen, Mui Ling Sharon Nai, Zhiguang Zhu, Chen-Nan Sun, Jun Wei, Wei Zhou

Engineering 2017, Volume 3, Issue 5,   Pages 695-700 doi: 10.1016/J.ENG.2017.05.012

Abstract:

In this study, the flow characteristics and behaviors of virgin and recycled Inconel powder for powder-bedThe results revealed that the particle size distribution (PSD) for the selective laser melting (SLM)with the recycled powder.The inter-relation between the powder characteristics is discussed herein.A propeller was successfully printed using the powder.

Keywords： Additive manufacturing     Powder characteristics     Gas atomization     Microstructure     Inconel    

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Influence of Particle Size on Laser Absorption and Scanning Track Formation Mechanisms of Pure TungstenPowder during Selective Laser Melting Article

Jiayao Zhang, Dongdong Gu, Ying Yang, Hongmei Zhang, Hongyu Chen, Donghuai Dai, Kaijie Lin

Engineering 2019, Volume 5, Issue 4,   Pages 736-745 doi: 10.1016/j.eng.2019.07.003

Abstract: interaction of a laser beam with particles in the powder layers of pure tungsten (W) material processedby selective laser melting (SLM).The influence of particle size on the powder-to-laser absorptivity and underlying absorption behaviorWith an increase in particle size, the powder layer absorbs less laser energy.SLM-fabricated W material was performed, and the experimental results validated the mechanisms of the powder-to-laser-absorption

Keywords： Selective laser melting (SLM)     Tungsten     Ray-tracing model     Absorptivity     Laser scanning tracks    

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Status of High-power Solid-state Lasers and Engineering Science

Peng Hansheng,Zhang Xiaomin,Fan Dianyuan,Zhu Jianqiang

Strategic Study of CAE 2001, Volume 3, Issue 3,   Pages 1-8

Abstract:

High-power solid-state laser technology development has been conducted so far for more than thirtyyears for application to inertial confinement fusion.Over twenty laser facilities have been built with the output energy of about a hundred Joules at the

Keywords： laser fusion     high-power solid-state laser     status     engineering science     innovation    

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Optoelectronic Crystals, All-Solid-State Lasers and their Applications——An Important Course of Optoelectronics R & D

Xu Zuyan

Strategic Study of CAE 1999, Volume 1, Issue 2,   Pages 72-77

Abstract: optoelectronics is the consequence of rapid evolution and mutual integration of the fields of micro-electronics, laserThe appearance of optical fibers and laser diodes in the 1960s, one major contribution of optoelectronicIn the 1990s, great advances in optoelectronic crystals and breakthroughs in laser diode technology havedisplays in entertainment, laser fusion power station, nuclear fission material processing, upgradingof laser weapons, etc.

Keywords： optoelectronic crystals     all-solid-state lasers     material processing     optical storage     laser displays     laserfusion    

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Assessment of glass fiber-reinforced polyester pipe powder in soil improvement

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 742-753 doi: 10.1007/s11709-021-0732-x

Abstract: This study investigates the use of glass fiber-reinforced polyester (GRP) pipe powder (PP) for improving

Keywords： shallow foundation     sandy soil     bearing capacity     soil improvement     pipe powder    

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Title Author Date Type Operation

Advances in polishing of internal structures on parts made by laser-based powder bed fusion

Journal Article

Orientation effect of electropolishing characteristics of 316L stainless steel fabricated by laser powderbed fusion

Journal Article

alloying of CoCrFeMnNi high-entropy alloy from elemental feedstock toward high-throughput synthesis via laserpowder bed fusion

Journal Article

Development of lunar regolith composite and structure via laser-assisted sintering

Journal Article

Formation Process and Mechanical Deformation Behavior of a Novel Laser-Printed Compression-Induced Twisting-Compliant

Jie Gao, Dongdong Gu, Chenglong Ma, Donghua Dai, Lixia Xi, Kaijie Lin, Tong Gao, Jihong Zhu, Yuexin Du

Journal Article

Development of Micro Selective Laser Melting: The State of the Art and Future Perspectives

Balasubramanian Nagarajan, Zhiheng Hu, Xu Song, Wei Zhai, Jun Wei

Journal Article

Two-dimensional modeling of sintering of a powder layer on top of nonporous substrate

Tiebing CHEN, Yuwen ZHANG,

Journal Article

Effect of process parameters on the density and porosity of laser melted AlSi10Mg/SiC metal matrix composite

Omotoyosi H. FAMODIMU, Mark STANFORD, Chike F. ODUOZA, Lijuan ZHANG

Journal Article

Prediction of the Thermal History and Solidification Microstructure of Inconel 718 Products Made by LaserPowder-Bed Fusion

Patcharapit Promoppatum, Shi-Chune Yao, P. Chris Pistorius, Anthony D. Rollett

Journal Article

Manufacturing cost constrained topology optimization for additive manufacturing

Jikai LIU, Qian CHEN, Xuan LIANG, Albert C. TO

Journal Article

Characteristics of Inconel Powders for Powder-Bed Additive Manufacturing

Quy Bau Nguyen, Mui Ling Sharon Nai, Zhiguang Zhu, Chen-Nan Sun, Jun Wei, Wei Zhou

Journal Article

Influence of Particle Size on Laser Absorption and Scanning Track Formation Mechanisms of Pure TungstenPowder during Selective Laser Melting

Jiayao Zhang, Dongdong Gu, Ying Yang, Hongmei Zhang, Hongyu Chen, Donghuai Dai, Kaijie Lin

Journal Article

Status of High-power Solid-state Lasers and Engineering Science

Peng Hansheng,Zhang Xiaomin,Fan Dianyuan,Zhu Jianqiang

Journal Article

Optoelectronic Crystals, All-Solid-State Lasers and their Applications——An Important Course of Optoelectronics R & D

Xu Zuyan

Journal Article

Assessment of glass fiber-reinforced polyester pipe powder in soil improvement

Journal Article