Article
Materials Science, Multidisciplinary
Ying Chen, Shiqian Song, Shang Zhu, Xiaosheng Cui, Feng Zhao
Summary: The study demonstrates that laser remelting can improve the density and microstructure of composite materials, but may lead to more gas pores and a high porosity level. Laser remelting has a promoting effect on grain growth and the formation of Al2O3 particles.
Article
Automation & Control Systems
Alberto Boschetto, Luana Bottini, Daniela Pilone
Summary: SLM technology allows for the production of dense and complex metallic parts, but with high surface roughness. This research aims to reduce surface roughness through skin laser remelting, although it affects subsurface defect formation.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
F. Bathaee, A. Zarei-Hanzaki, A. Moshiri, H. R. Abedi
Summary: This study investigates the cyclic deformation behavior of AlSi10Mg alloy fabricated through selective laser melting. The directly aged microstructure exhibited the best fatigue performance with an outstanding balance between fatigue life and strength level. The low aspect ratio of the melt pools intensified the Marangoni effect, leading to crack initiation and the formation of balling defects.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Zhichao Dong, Mengchen Xu, Haowei Guo, Xiangyu Fei, Yabo Liu, Benkui Gong, Guannan Ju
Summary: This study investigates the influence of selective laser melting process parameters on the microstructural evolution of AlSi10Mg alloy. Various microscopy and diffraction techniques were used to characterize the microstructure. The results show that the microstructural features, texture, and phase change of the alloy vary with different scan speeds, leading to differences in hardness.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Physical
Hong Wu, Yaojia Ren, Junye Ren, Luxin Liang, Ruidi Li, Qihong Fang, Anhui Cai, Quan Shan, Yingtao Tian, Ian Baker
Summary: The effect of volumetric energy density (VED) on the fabrication of AlSi10Mg alloy by selective laser melting (SLM) was investigated, revealing different melting modes and resulting in varied microstructural evolution and mechanical properties. Higher VED led to the formation of keyhole defects and two types of molten pools, affecting the grain size, Si network, and mechanical properties of the SLM parts differently.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Debajyoti Bhaduri, Tina Ghara, Pavel Penchev, Soumitra Paul, Catalin Pruncu, Stefan Dimov, David Morgan
Summary: A novel LP strategy was proposed to improve the re-melting of aluminium alloys by introducing a thermally insulating ceramic baseplate, resulting in significant reductions in surface roughness and residual stresses. The study highlights the importance of controlling heat dissipation in laser polishing of thermally conductive materials to achieve desired surface integrity properties.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
B. Rozegari Ghashghay, H. R. Abedi, S. G. Shabestari
Summary: This study investigates the grain refinement in the microstructure of selective laser-melted AlSi10Mg alloy. Randomly oriented grains without preferred micro-texture are observed in the printed microstructure. Columnar grains aligned with the building direction have been formed in the molten pool. Refined equiaxed grains with a size of fewer than 10 mm are formed during solidification or dynamic recrystallization.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Qipeng Wang, Jian Kong, Xiangkui Liu, Xinxiang Song, Kewei Dong, Yang Yang
Summary: Selective laser melting (SLM) technology was used to fabricate Ti-6Al-4V alloy prints with varying overlapping remelting areas and energy densities, resulting in improved mechanical properties. Increasing overlapping remelting area and energy densities led to decreased pore size and increased nano-beta phase precipitation, enhancing the overall mechanical performance of the material.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Jiahe Mei, Ying Han, Jiapeng Sun, Guoqing Zu, Xiaolei Song, Weiwei Zhu, Xu Ran
Summary: In this study, a high-strength Al-Cu-Mg-Si alloy was prepared using selective laser melting (SLM) with blended powders. The addition of Cu was found to refine the microstructure and enhance the mechanical properties of the alloy. The increase in strength and hardness was attributed to the refinement of eutectic network, solid solution strengthening, elimination of fracture-prone heat affected zone (HAZ), and the precipitation of Si particles within the eutectic network.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Abhishek Tiwari, Gaurav Singh, Rengaswamy Jayaganthan
Summary: The corrosion behavior of AlSi10Mg alloy produced by selective laser melting (SLM) in different atmospheres, argon and nitrogen, was compared to that of cast AlSi10Mg alloy. The electrochemical behavior of SLMed AlSi10Mg alloy in 0.1 M NaCl solution was investigated using potentiodynamic polarization and electrochemical impedance spectroscopy (EIS), and the degradation features were analyzed through SEM. The corrosion resistance of AlSi10Mg produced by selective laser melting was found to be 2-3 times higher than that of cast AlSi10Mg, which can be attributed to the faster cooling rate during solidification.
Article
Chemistry, Physical
Xiaofeng Li, Denghao Yi, Xiaoyu Wu, Jinfang Zhang, Xiaohui Yang, Zixuan Zhao, Yinghao Feng, Jianhong Wang, Peikang Bai, Bin Liu, Yong Liu
Summary: This study investigated the effects of different construction angles on the microstructure and mechanical properties of AlSi10Mg alloys by fabricating seven bulks with different angles using selective laser melting. The results showed that increasing the construction angle changed the laser track segments and affected the grain structure in the vertical planes. The mechanical property anisotropy of the alloy was attributed to various factors such as pores, equiaxed grain structure, ultra-fine equiaxed sub-grains, and working hardening.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Dongyun Zhang, Denghao Yi, Xuping Wu, Zhiyuan Liu, Weidong Wang, Reinhart Poprawe, Johannes Henrich Schleifenbaumc, Stephan Zieglerd
Summary: In this study, a 10 wt% SiC-reinforced AlSi10Mg-based composites were prepared by selective laser melting (SLM) process. It was found that higher laser linear energy density promoted in-situ reaction between SiC particles and Al melt, resulting in the formation of Al4SiC4 phase. This led to improved mechanical properties and uniform distribution of SiC particles and Al4SiC4 phase in the composites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Behnam Rozegari Ghashghay, Hamid Reza Abedi, Saeed G. Shabestari, Amirhossein Shafieizad
Summary: This study investigates the room and high-temperature mechanical properties of selective laser melted AlSi10Mg alloy and compares them with other alloys. The results show that the SLMed AlSi10Mg alloy has higher fracture toughness, higher strain tolerance at different temperatures, and higher compressive yield strength.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Physical
J. Karimi, M. Antonov, L. Kollo, K. G. Prashanth
Summary: This study aimed to enhance the surface quality and mechanical properties of a Ti6Al4V alloy manufactured using selective laser melting (SLM) by applying laser remelting. The research found that increasing the number of remelting steps can improve fatigue strength, strength, and wear resistance of the parts significantly.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Qiyang Tan, Yu Yin, Zhiqi Fan, Jingqi Zhang, Yingang Liu, Ming-Xing Zhang
Summary: In this study, it was found that adding 0.2-0.5 wt% LaB6 nanoparticles to the selective laser melted AlSi10Mg alloy can significantly refine grain size and homogenize the microstructure, thereby improving the mechanical properties of the alloy. However, increasing the LaB6 addition to 2 wt% did not further refine the grains, but instead weakened the ductility of the alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Physical
Zhonghua Li, Bao-Qiang Li, Peikang Bai, Bin Liu, Yu Wang
Article
Materials Science, Multidisciplinary
Bao-Qiang Li, Zhonghua Li, Peikang Bai, Bin Liu, Zezhou Kuai
Article
Materials Science, Multidisciplinary
Bin Liu, Bao-Qiang Li, Zhonghua Li, Peikang Bai, Yu Wang, Zezhou Kuai
RESULTS IN PHYSICS
(2019)
Article
Materials Science, Multidisciplinary
Zhiqiang Li, Xiaoxiao Hu, Zhao-Yun Zeng, Yajiang Chen, Ai-Xi Chen, Xiaobing Luo
Summary: This work demonstrates how the current phase transition of atomic Bose-Einstein condensates in a trap can be controlled by applying an oscillatory driving field. The self-trapping effect in momentum space allows for a suppression of oscillations and a nearly constant directed current. Mean-field chaos serves as an indicator of the quantum phase transition. These findings are supported by an effective three-mode model.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Jinqin Ye, Yi Li, Jun Ding, Heng Yu, Xianqi Dai
Summary: Constructing van der Waals heterostructures is an efficient approach to enhance the properties and broaden the applications of two-dimensional materials. This study explores the structure, stability, electronic, and optical properties of BlueP/MoSSe heterostructures using density functional theory calculations. It is found that the bandgap and band edge of these heterostructures can be effectively modulated by strain and electric field.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Simone Anzellini, Silvia Boccato, Samuel R. Baty, Leonid Burakovsky, Daniele Antonangeli, Daniel Errandonea, Raffaella Torchio
Summary: The melting line of cobalt was investigated through experimental and theoretical methods, revealing a phase transition from hexagonal close-packed structure to face-centered cubic structure at high temperatures. The melting temperatures obtained from both methods showed good agreement and can be described by a Simon-Glatzel equation. Additionally, a thermal equation of state for the face-centered cubic phase of cobalt was determined.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Jiajuan Qing, Shisheng Zhou, Jimei Wu, Mingyue Shao
Summary: This paper investigates the nonlinear chaotic vibrations of fractional viscoelastic PET membranes subjected to combined harmonic and variable axial loads. The viscoelasticity of PET membrane is characterized by the fractional Kelvin-Voigt model. The reliability of the numerical strategy is proved by comparing the results with available fractional systems and examples. The influence of system parameters on chaotic behaviors is described using bifurcation diagrams and detailed responses. This research provides a fundamental framework for controlling viscoelastic substrates in flexible manufacturing.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Aly R. Seadawy, Syed T. R. Rizvi, Bazgha Mustafa, Kashif Ali
Summary: In this research, the complete discriminant system of polynomial method is used to analyze the dynamic characteristics of the cubic-quintic nonlinear Schrodinger equation with an additional anti-cubic nonlinear term, with a focus on the introduction of various optical solitons and wave structures. The analysis illustrates the importance of the polynomial method and provides dynamic results for the solutions.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Ruihang Huang
Summary: This study utilized bibliometric analysis to examine the development of multi-scale calculation of carbon nanotubes. Using CiteSpace III software, 1253 relevant articles from the SCI Expanded database were analyzed to identify research trends in this field. The findings revealed significant progress in the research of multi-scale calculation of carbon nanotubes from 1999 to 2023. The analysis of keywords, literature co-citation network, and keyword cluster network provided valuable insights into the knowledge base, important research results, and research hotspots in this field. Additionally, the study predicted future hot research directions using keyword breakout analysis. The research provides profound insights and important guidance for researchers and policymakers in the field of multi-scale calculation of carbon nanotubes to promote further innovation and development.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Xiaohua Zhou, Erhu Zhang, Shumin Zhao, Lei Zhang
Summary: A theoretic model is proposed to study the adhesion behavior of a vesicle adhering inside another vesicle in 2-D case. The model investigates the equilibrium shape equations and boundary conditions, and reveals the phase diagram and critical adhesion condition in different situations.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Xin Yi, Jia-Cheng Huo, Yong-Pan Gao, Ling Fan, Ru Zhang, Cong Cao
Summary: The paper introduces an iterative quantum algorithm based on quantum gradient descent to solve combinatorial optimization problems, verifying the effectiveness and robustness of the algorithm through numerical simulations and comparison with other algorithms. Experimental results on a real quantum computer also demonstrate the feasibility and performance of the algorithm.
RESULTS IN PHYSICS
(2024)