Article
Chemistry, Physical
Hao Chen, Hongzhi Cui, Di Jiang, Xiaojie Song, Lijun Zhang, Guoliang Ma, Xiaohua Gao, Hushan Niu, Xiaofeng Zhao, Jian Li, Chunzhi Zhang, Ren Wang, Xiaohong Sun
Summary: High-entropy amorphous composite coatings, such as (FeCoCrNi)75Nb10B8Si7, prepared through plasma cladding and subsequent laser remelting, exhibit excellent mechanical properties and wear resistance. The laser remelting coatings show lower coefficient of friction compared to plasma cladding coatings, attributed to a reduction in adhesive wear.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Coatings & Films
Guosong Zhang, Tao Liu, QiangHao Yin, Wenchao Wang, Xiaojie Song, Weimin Huang, Hongyun Zhang
Summary: By adjusting the B-Si ratio and laser remelting, the microstructure, phase composition, and properties of high-entropy alloy coatings can be effectively improved, enhancing their wear resistance.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Mingxia Liu, Hao Jiang, Gengrong Chang, Yangyang Xu, Fei Ma, Kewei Xu
Summary: In this paper, thin protective coatings with a thickness of 0.01 to 0.25 mm were successfully fabricated on metal parts using high-speed laser cladding. Laser remelting improved the flatness and surface characteristics of the coatings, resulting in a refined gradient microstructure. The remelted coating exhibited enhanced corrosion resistance, higher hardness, and good wear resistance.
Article
Materials Science, Ceramics
Dianjun Sun, Xiangqing Wu, Faqin Xie, Peng He, Zheng Li, Jiayu He
Summary: Bio-ceramic coatings were successfully fabricated on TC6 alloy substrates using laser remelting and micro-arc oxidation. The coatings were characterized and analyzed for their surface morphology, composition, and residual stress distribution. It was found that increasing the content of the rutile TiO2 phase improved the quality of the coatings and reduced porosity. The fretting wear test showed that the laser remelted MAO coating exhibited the best performance against fretting wear in a simulated body fluid environment, with the wear mechanism attributed to delamination and fatigue wear.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Qi Sun, Jie Yang, Rui Tian, Xiaoqiang Fan, Zhongni Liao, Minhao Zhu
Summary: In this study, a novel strategy using laser surface remelting (LSR) was proposed to modify the surface microstructure of a precipitate-hardened magnesium alloy, which led to synergistically enhanced corrosion and wear resistances. The experimental results showed that the surface average grain size was refined, the secondary phases were regularly distributed along the grain boundaries, and the surface hardness was improved after LSR treatment. The possible mechanisms responsible for the synergy of corrosion and wear performances were discussed.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Ceramics
Chunyan Li, Jianshu Zhai, Lin Tian, Yu Lu, Xiaocheng Li, Shengzhong Kou
Summary: The Fe-Cr-Mo-B-C coating was prepared on 45 steel using laser cladding. The effects of different process parameters on the properties of the coatings were analyzed. The increase of laser power or overlap rate resulted in more serious crystallization, porosity, and even cracks, reducing the overall properties of the coatings. The microhardness of the coatings was determined by the amorphous phase and hard phases B6Fe23 and Cr2B. The optimal conditions for laser cladding were identified as a power of 1400 W with an overlap rate of 30%.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Materials Science, Coatings & Films
Yangchuan Cai, Yan Cui, Lisong Zhu, Ruyu Tian, Keping Geng, Huijun Li, Jian Han
Summary: Through in-situ laser remelting treatment, the morphology and distribution of ceramic particles in the laser cladding layer were modified, resulting in weakened weak spots and improved wear resistance.
SURFACE ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Chengquan Zhang, Linjiang Chai, Yuanzhuo Liu, Zhihao Li, Fangli Zhang, Xinyi Li, Zhongtao Fu
Summary: In this study, the surface of an A356 cast Al alloy was remelted by a pulsed laser at two different scanning speeds (2 mm/s and 8 mm/s), and the microstructural features of the laser-remelted surface layers were characterized and correlated with their wear/corrosion resistance. The results showed that the surface hardness and wear resistance of both the 2 mm/s and 8 mm/s specimens were significantly improved compared to the substrate, and the corrosion resistance of the LSRed specimens was also greatly enhanced. These improvements can be attributed to the homogenization of the microstructure, the increased supersaturation of Si in alpha-Al, and the refinement and redistribution of Al-Si eutectics in the remelted layer.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Yuhang Ding, Wanyuan Gui, Baoxian Nie, Wenya Bi, Cheng Zhong, Yanpeng Xue, Benli Luan
Summary: Ultra-high-speed laser cladding (UHSLC) is an effective method for depositing Inconel 625 coatings on 27SiMn steel to extend its service life. However, the issue of elemental segregation in the Inconel 625 coatings is serious, and high-speed laser remelting (HSLR) was investigated to address this problem. The study found that HSLR treatment significantly reduces the surface roughness of UHSLC Inconel 625 laser cladding, while improving its wear resistance. Furthermore, finite element simulation suggests that a higher remelting power may result in better melt pool fluidity and a more uniform composition distribution.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Optics
Yang Li, Shoujian Hou, Yanwei Chai, Yang Zhou, Yun Zou
Summary: The grain sizes of laser cladding coatings vary due to the processing characteristics of laser cladding. In this study, the laser ultrasonic (LU) method was used to nondestructively measure the distribution of grain sizes in laser cladding coatings. The results showed that the LU method can be used to determine the grain sizes of coatings.
Article
Engineering, Mechanical
Xiaobin Liu, Jiazi Bi, Ziyang Meng, Ran Li, Yan Li, Tao Zhang
Summary: In this study, a Co-based amorphous powder with high glass-forming ability was prepared by gas-atomization and used to fabricate a large-area amorphous coating through laser cladding. The effect of different laser parameters on the glass formation of the coating was investigated, and the resulting coating exhibited extremely high microhardness and wear resistance. Clarification of the wear-failure mechanism of the Co-based coating was achieved through microstructural and element-distribution analysis of various worn surfaces.
TRIBOLOGY INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Bingqian Jin, Nannan Zhang, Shuo Yin
Summary: In this study, HEA coatings with improved wear resistance were fabricated by plasma spray and subsequent laser remelting. The dispersion of hard phase and nano-particles resulting from the second heating significantly increased the microhardness and wear resistance performance of the coatings.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Optics
Chunlun Chen, Aixin Feng, Yacheng Wei, Yu Wang, Xiaoming Pan, Xiangyu Song
Summary: Laser cladding of WC/Ni coatings on submersible electric pump impeller surface was studied. The effects of nano and micron WC particles on the microstructure, physical phase, microhardness, and frictional wear properties of the Ni60 coatings were investigated. The results showed that the addition of WC particles improved the microhardness and wear resistance of the coatings.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Materials Science, Coatings & Films
Hao-zheng Wang, Yan-hai Cheng, Jing-yong Yang, Qing-qing Wang
Summary: Laser remelting improved the properties of the Fe-based amorphous coating on H13 steel surface, reducing defects and increasing corrosion resistance. However, transcrystalline cracks may occur in the crystalline region after remelting.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Engineering, Mechanical
Yucheng Wu, Zhaoyang Zhang, Kun Xu, Xueren Dai, Hao Zhu, Tao Ni, Yang Liu
Summary: In this study, the surface cracks of an amorphous Ni-P coating were successfully removed by laser remelting, resulting in improved microhardness and wear resistance. The remelted layer transformed from amorphous to crystalline and exhibited corrugated structure. The main wear mechanisms of the remelted coating include abrasive wear, oxidation wear, and plastic deformation.
TRIBOLOGY INTERNATIONAL
(2022)
Article
Metallurgy & Metallurgical Engineering
Shiwei Zhang, Yadong Wang, Zhihui Xiong, Minhao Zhu, Zhijie Zhang, Zhuguo Li
Summary: The study investigated the effects of activating fluxes on weld bead morphology, arc behavior, electrical signals, and temperature field. Results showed that the addition of SiO2, TiO2, ZnO, and Fe2O3 improved weld formation and penetration depth, while also reducing welding voltage and increasing welding current. However, CaO and B2O3 dramatically deteriorated process stability.
WELDING IN THE WORLD
(2021)
Article
Materials Science, Multidisciplinary
Wenjie Ren, Yuan Chen, Ling Lan, Fenggui Lu, Zhuguo Li
Summary: The laser-welded Inconel 617 superalloy exposed at 750 degrees C for up to 7000 h showed the formation of carbides and phases, resulting in an increase in hardness and a significant drop in impact toughness.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2021)
Article
Materials Science, Multidisciplinary
Hongyu Xiao, Jiwei Geng, Yugang Li, Hongping Li, Dong Chen, Mingliang Wang, Zhuguo Li, Haowei Wang
Summary: In this study, the quench sensitivity of TiB2/7050Al composite was investigated using Jominy end quench test. It was found that the hardness decreased significantly with increasing distance from the quenching end, as more eta phases precipitated and coarsened on grain boundaries. The composite was observed to be more quench sensitive than its alloy counterpart, attributed to four microstructure characteristics inherited from the aluminum matrix and originating from the TiB2 addition.
JOURNAL OF MATERIALS RESEARCH
(2021)
Article
Nanoscience & Nanotechnology
Zhihui Xiong, Xiaotong Pang, Shilong Liu, Zhuguo Li, R. D. K. Misra
Summary: The addition of nickel (Ni) in selective laser melted titanium alloy can effectively refine grain size, avoid the formation of brittle phases, and significantly increase the strength and ductility of the alloy. Microalloying with Ni enhances the properties of titanium alloys processed by additive manufacturing.
SCRIPTA MATERIALIA
(2021)
Article
Nanoscience & Nanotechnology
Bolun Han, Chengcheng Zhang, Kai Feng, Zhuguo Li, Xiancheng Zhang, Yao Shen, Xiaodong Wang, Hiroyuki Kokawa, Ruifeng Li, Zhiyuan Wang, Paul K. Chu
Summary: The study fabricated a near full-dense hierarchical CrCoNi medium entropy alloy (MEA) using selective laser melting (SLM), achieving superior yield strength at 77K. The high strength of the material stems from a hierarchical microstructure composed of high-density dislocations and low-angle grain boundaries (LAGB). The results suggest that SLM is a viable technique for fabricating dense hierarchical CrCoNi MEA and offer a design strategy to further improve mechanical properties.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Xiaotong Pang, Zhihao Xiong, Shilong Liu, Devesh Misra, Zhihui Xiong, Zhuguo Li
Summary: This study elucidates the microstructural evolution and strengthening mechanism of commercial purity Ti (CP-Ti)/Ti-0.4Ni graded material (GM) fabricated by laser melting deposition (LMD). Microalloying with Ni in the GM improved the mechanical properties and avoided composition reapportionment issues at the interface, highlighting the potential of microalloyed Ti-0.4Ni for providing high-performance graded materials by LMD.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2021)
Article
Metallurgy & Metallurgical Engineering
Hong-yu Xiao, Yu-gang Li, Ji-wei Geng, Hong-ping Li, Ming-liang Wang, Dong Chen, Zhu-guo Li, Hao-wei Wang
Summary: This study investigates the effects of TiB2 and Zr on the microstructure, aging response, and mechanical properties of hot-extruded Al-Zn-Mg-Cu based materials. It was found that TiB2 can refine grain size and enhance hardness, while Zr primarily inhibits grain growth. Both additives have some positive impacts on aging kinetics and hardness.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2021)
Review
Optics
Dongshi Zhang, Zhuguo Li, Koji Sugioka
Summary: The demand for new nanoscience-based technologies is increasing, with LAL gaining attention for nanomaterial synthesis. It is easy to set up and perform, allowing for a diverse range of nanomaterials to be synthesized using different targets and liquids, with the choice of liquids impacting the final products significantly.
JOURNAL OF PHYSICS-PHOTONICS
(2021)
Article
Materials Science, Multidisciplinary
Ruijie Liu, Dongshi Zhang, Zhuguo Li
Summary: This study demonstrates the development of tunable iridescent antireflective surfaces through femtosecond laser ablation of tungsten and molybdenum, synthesizing functional metal-oxide nanomaterials, in situ deposition and hierarchical nanostructuring of LIPSSs. Adjusting the scanning interval allows modulation of particle deposition rates on the surface, leading to the formation of better ultrabroadband antireflective surfaces with less pronounced iridescence. Loose deposition of MoOx and WOx particles outperforms tight deposition for ultrabroadband antireflective applications, enhancing antireflectance performances significantly.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Xiaotong Pang, Zhihui Xiong, Chengwu Yao, Junhao Sun, R. D. K. Misra, Zhuguo Li
Summary: The metastable beta titanium alloy TB2 fabricated by laser melting deposition showed good ductility and high ultimate tensile strength. The beta solution plus two-step aging treatment was proved to achieve a good combination of strength and ductility for the TB2 alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Coatings & Films
Yulei Feng, Xiaotong Pang, Kai Feng, Yueqiao Feng, Zhuguo Li
Summary: A novel test method, self-restraint test, was proposed to evaluate the crack resistance of high hardness coatings prepared by laser cladding. The method was effective in evaluating different coatings and establishing empirical formulas. It has significant implications for the preparation of high hardness crack-free coatings.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Chemistry, Physical
Yulei Feng, Xiaotong Pang, Kai Feng, Yueqiao Feng, Zhuguo Li
Summary: Fe-based coatings were prepared on 42CrMo by laser cladding with a trace amount of boron added. The effect of additive boron level on the reinforcements and compressive properties of the coating was analyzed. It was found that the addition of boron can significantly improve the strength and plasticity of the coating, and a eutectic structure composed of Fe3C type carbides and gamma-Fe was formed by reducing the formation energy of Fe3C.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Hongyu Xiao, Zhiping Wang, Jiwei Geng, Chengcheng Zhang, Yugang Li, Qing Yang, Mingliang Wang, Dong Chen, Zhuguo Li, Haowei Wang
Summary: This study investigated the precipitation and crystallographic relationships between the quench-induced S phase and Al matrix in an Al-Zn-Mg-Cu alloy using scanning transmission electron microscopy and scanning precession electron diffraction. It was found that higher lattice strain energy led to Zn segregation at the S-Al interfaces and the heterogeneous nucleation of nanosized eta' precipitates. The crystallographic orientation relationships between the S phases and precipitates were reported and discussed for the first time in an Al-Zn-Mg-Cu alloy.
SCRIPTA MATERIALIA
(2022)
Article
Engineering, Electrical & Electronic
Ruijie Liu, Dongshi Zhang, Sihan Ji, Yunyu Cai, Changhao Liang, Zhuguo Li
Summary: This study demonstrates the development of multifunctional metasurfaces through femtosecond laser ablation of titanium, resulting in macropore/LIPSS micro/nanostructures. These structures exhibit superior performance in ultrabroadband UV-vis-NIR-MIR absorbance, photothermal conversion, and thermal-emission induced reflectance oscillation. The density and size of macropores can be controlled by adjusting laser power and scanning velocity, allowing for optimization of different functions.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
Article
Optics
Dongshi Zhang, Xinzhuo Li, Yao Fu, Qinghe Yao, Zhuguo Li, Koji Sugioka
Summary: This work reveals that fluid dynamics induced by femtosecond laser ablation in liquid can break the laser polarization state restriction and produce irregular circular-LIPSS and crisscross-LIPSS. Liquid vortex plays a crucial role in the formation of macropores and complex fluid dynamics on mountain-like microstructures can cause the formation of CCLIPSS. This opens up new possibilities to diversify the morphologies of LIPSS formed by femtosecond laser ablation in liquid.
OPTO-ELECTRONIC ADVANCES
(2022)
