Article
Materials Science, Multidisciplinary
Hui Dong, Peng-Fei Guo, Yan Han, Ru-Xue Bai, Zi-Chen Yang, San-Qi Zhang
Summary: Heat treatment was conducted on high speed laser-cladded Ni/316L coating to enhance corrosion resistance. Coatings were heat treated at temperatures of 650 ℃, 700 ℃, 750 ℃, and 800 ℃. The results revealed that coating porosity was independent of annealing temperature and the coating's chemical composition remained intact after heat treatment. Grain size decreased initially and then increased with increasing heat treatment temperature. The content of equiaxed grains and Fe19Ni precipitation phase increased with temperature. Precipitation led to higher corrosion resistance in heat-treated coatings compared to as-cladded coatings. The corrosion resistance of heat-treated coatings increased initially and then decreased due to the combined effect of precipitation and grain morphology. Therefore, corrosion resistance can be improved by annealing, but suitable parameters need to be determined.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Mechanical
Chao-Min Yang, Xiu-Bo Liu, Yi-Fan Liu, Zheng-Xing Zhu, Yuan Meng, Hai-Bin Zhou, Shi-Hong Zhang
Summary: To prove the feasibility of using Cu to improve tribological properties, FeCoCrNiCux coatings were created on SUS304 using laser cladding. The effects of Cu on the microstructure were analyzed, and the tribological properties were systematically investigated. The results showed that the coatings consisted mainly of FCC solid solution, with Cu/Ni segregation appearing on grain boundaries and dendrites. The exceptional wear resistance of the FeCoCrNiCu coating can be attributed to its high work hardening capacity and ductility. At high temperatures, the friction coefficient gradually decreased with increasing Cu content, due to the mechanical combination of hard and ductile phases resulting in improved strength and wear resistance in the deformation layer.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Prayag Burad, Chaitanya Gullipalli, Nikhil Thawari, T. V. K. Gupta
Summary: In this study, multilayered deposition of nickel-based alloy Inconel 718 was performed using fiber-coupled diode laser. The effects of two different stages of heat treatment on microstructure and mechanical properties were investigated. The results showed that the morphology and hardness of the deposit varied at different stages, with a 40 to 50% increment in microhardness obtained and better results achieved with the two-stage heat treatment process.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Optics
Mina Zhang, Dafeng Wang, Longjun He, Xuyang Ye, Wentai Ouyang, Zifa Xu, Wenwu Zhang, Xianglin Zhou
Summary: In this study, AlCrFeMnNi high-entropy alloy (HEA) coatings were successfully deposited on 316L stainless steel using laser cladding technology. The coatings exhibited dense and uniform microstructures and excellent high-temperature wear resistance. The predominant wear mechanism of the coatings at high temperatures was oxidation and adhesive wear.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Engineering, Mechanical
Sougata Roy, Niyanth Sridharan, Ercan Cakmak, Hamed Ghaednia, Arup Gangopadhyay, Jun Qu
Summary: This study investigates the feasibility of using laser cladding for repairing hot working tools by adding a Stellite 21 alloy coating onto a 350 maraging steel substrate. The laser-processed coating showed high integrity with good bonding, but had lower wear resistance compared to the substrate. Heat treatment led to phase transformation but had little effect on improving wear resistance.
Article
Materials Science, Ceramics
Hao Zhang, Yingjun Pan, Yang Zhang, Guofu Lian, Qiang Cao, Jianghuai Yang, Deqing Ke
Summary: In this study, Mo2FeB2 coating with excellent properties was prepared using laser cladding technology, and the influence of cladding laser energy density on the coating properties was investigated. By adjusting the laser energy density, a coating with the highest microhardness and wear resistance could be obtained.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Jianyu Yang, Xudong Li, Fei Li, Wenxiao Wang, Zhijie Li, Guanchao Li, Hualong Xie
Summary: The effects of different cooling conditions on microstructure, hardness, and properties of laser-cladding layer were studied, and excellent thin-walled parts were obtained through optimizing processing conditions and using water cooling device.
Article
Engineering, Mechanical
Shisheng Lu, Lingqian Wang, Jiansong Zhou, Jun Liang
Summary: The microstructure, microhardness, and tribological behavior of a Co-Ti(3)SiC(2) coating with a Ni-based interlayer on copper alloy were investigated. The results showed that the addition of Ti(3)SiC(2) increased the microhardness of the coating due to solid solution strengthening and second phase strengthening. A coating with 10 wt% Ti(3)SiC(2) exhibited the lowest friction coefficient and wear rate at 600 ℃, while a coating with 20 wt% Ti(3)SiC(2) had the highest friction coefficient and wear rate.
TRIBOLOGY INTERNATIONAL
(2022)
Article
Materials Science, Coatings & Films
Xian Zeng, Ziyong Liu, Ganggang Wu, Xu Tong, Yaqiong Xiong, Xudong Cheng, Xuanguo Wang, Tomiko Yamaguchi
Summary: In this study, an AlCoCrFeNiTi0.5 high-entropy alloy (HEA) coating was successfully deposited on a Ti-6Al-4V alloy through laser cladding, showing excellent high-temperature oxidation resistance and wear performance. The coating exhibited a complex microstructure, high hardness, low oxidation rate, and minimal wear volume loss.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Chemistry, Physical
Xiaofeng Wan, Chuang Tian, Yi Li, Jingling Zhou, Shuangqing Qian, Lihong Su, Li Wang
Summary: The effect of Y2O3 addition on the microstructure and properties of laser cladded Al-Si alloy coating on AZ91D magnesium alloy surface was investigated. The experimental results showed that the cladding layers with Al-Si + Y2O3 contained alpha-Mg, Mg2Si, Al4MgY, and a small amount of Al12Mg17 phases. The coarse dendrites, reticulated eutectic structures, and massive phases in the coatings were refined and distributed more uniformly with the increased amount of Y2O3. Y2O3 addition improved the microhardness, wear resistance, and corrosion resistance of the coatings.
Article
Materials Science, Coatings & Films
Weimin Guo, Xiaoqiang Li, Ning Ding, Guoqiang Liu, Jianqun He, Linan Tian, Lizong Chen, Fahmi Zairi
Summary: In this study, a Fe-based alloy coating was fabricated by laser cladding process and subjected to heat treatment. The microstructure, hardness, and tensile strength of the coating were analyzed before and after heat treatment. The results showed that the hardness decreased while the tensile strength increased after heat treatment.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
L. Emanuelli, F. Deirmina, M. Pellizzari
Summary: IN718 Ni-superalloy samples were produced using Laser Powder Bed Fusion (LPBF). The phase transformations, microstructure evolution, and mechanical properties during different heat treatments were investigated. The precipitation temperature of γI (525℃), γII (725℃), and δ (935℃) were determined, and the activation energy of γI precipitation was estimated. It was found that the strengthening effect after artificial ageing (AA) is due to γII precipitation. Solution annealing (SA) and homogenization annealing (HA) are responsible for chemical homogenization and anisotropy removal. HA is necessary for full recrystallization as SA alone cannot completely recover the solidification structure.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Jiajia Si, Wei Gao, Xin Xu, Shicheng Wang, Hongying Yu, Dongbai Sun
Summary: This study investigated the key factors in preparing titanium alloy coatings using laser cladding technology and discussed the correlation between interdiffusion behavior and microstructure characteristics of the coatings. The results showed that well-controlled heat input and thermal diffusion ensured high performance. The powder feed rate had an important influence on thermal diffusion, and the coating thickness affected the structure and performance. The study also provided the optimal cladding powder and powder feed rate for the formation of high-performance titanium alloy coatings.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Haiyang Long, Wei Hao, Rucheng Ma, Yongliang Gui, Chunyan Song, Tieyu Qin, Xuefeng Zhang
Summary: FeCrSiNiCoC coatings were successfully fabricated on 1Cr11Ni heat resistant steel substrate using a laser-based cladding technique. The coatings exhibited fine macroscopic morphology and uniform microstructure, consisting of dendritic gamma-Fe and eutectic Fe-Cr intermetallic. The average microhardness of the coatings was measured to be 467 HV0.5 +/- 22.6 HV0.5. The coatings showed a decrease in friction coefficient and wear rate as the temperature increased, with a change in the wear mechanism from abrasive wear, adhesive wear, and oxidative wear to oxidative wear and three-body wear.
Article
Materials Science, Coatings & Films
Shen Li, Tomiko Yamaguchi
Summary: A TiNiSiCrCoAl high-entropy alloy coating was prepared on the surface of Ti-6Al-4V alloy using laser cladding technology to enhance its high-temperature oxidation performance. The coating exhibited a microstructure composed of a matrix and a sigma phase. The amorphous-structured matrix showed higher oxidation resistance compared to the FCC-structured sigma phase. The coating demonstrated significantly improved oxidation resistance at high temperatures when compared to the Ti-6Al-4V substrate.
SURFACE & COATINGS TECHNOLOGY
(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)
