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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.The L-PBF-based process parameters are optimized; and two different methods, namely, a multi-meltingX-ray diffraction indicates that HEA microstructure can be obtained from elemental powders via L-PBF.

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

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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: investigate the orientation effect of electropolishing characteristics on different surfaces of 316Lstainless steel fabricated by laser powder bed fusion (L-PBF), considering that the rough surface ofelectropolishing characteristics on the different surfaces corresponding to the building orientation in selective laserThe finish of electropolished surfaces is affected by the defects generated during L-PBF process.

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

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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 attractiveHowever, the inferior surface quality of L-PBF components hinders its productization progress seriouslyIn this article, process, basic forms, and applications relevant to L-PBF internal structures are reviewedpoor surface quality and differences in the microstructure and property of the surface features of L-PBFVarious polishing technologies for L-PBF components with inner structures are presented, whereas their

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

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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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Large-scale industrial manufacturing of carbon nanotubes in a continuous inclined mobile-bed rotating

Sophie L. Pirard, Sigrid Douven, Jean-Paul Pirard

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 2,   Pages 280-289 doi: 10.1007/s11705-017-1635-1

Abstract: This process is based on a continuous inclined mobile-bed rotating reactor and very active catalysts

Keywords： carbon nanotubes     catalytic chemical vapor deposition     inclined rotating reactor     industrial process     scaling-up    

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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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Influence of the field humiture environment on the mechanical properties of 316L stainless steel repaired

Lianzhong ZHANG, Dichen LI, Shenping YAN, Ruidong XIE, Hongliang QU

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 4,   Pages 513-519 doi: 10.1007/s11465-018-0503-0

Abstract:

The mechanical properties of 316L stainless steel repaired with Fe314 under different temperaturesResults indicated favorable compatibility between Fe314 and 316L stainless steel., tensile strength, and sectional contraction percentage were higher in repaired samples than in 316LFurthermore, 316L stainless steel can be repaired through laser cladding by using Fe314 powder without

Keywords： laser cladding     repaired performance     tensile strength     temperature and humidity environment    

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Title Author Date Type Operation

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

Journal Article

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

Journal Article

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

Large-scale industrial manufacturing of carbon nanotubes in a continuous inclined mobile-bed rotating

Sophie L. Pirard, Sigrid Douven, Jean-Paul Pirard

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

Influence of the field humiture environment on the mechanical properties of 316L stainless steel repaired

Lianzhong ZHANG, Dichen LI, Shenping YAN, Ruidong XIE, Hongliang QU

Journal Article