Aug 07, 2018 · An analysis was made of microstructure of hypereutectic Al-2.0 wt% Fe alloy treated by laser surface remelting (LSR), microhardness test, and electrochemical behavior test and their numerical simulation was done. Microstructure was analyzed by optical microscopy, field-emission scanning electron microscopy and Vickers microhardness tests. Coatings Free Full-Text Effects of V and Cr on Laser Fe-based coatings with high V and Cr content were obtained by laser cladding using Fe-based powder with different Cr3C2 and FeV50 content. The results showed that Fe-based coatings were uniform and dense. The constituent phases were mainly composed of -Fe solid solution with the increase of Cr3C2 and FeV50, -Fe and V8C7 phases were achieved. The microstructure of the coatings exhibited a
May 02, 2019 · Through the electrochemical impedance spectroscopy (EIS) test, laser surface remelting-treated workpiece exhibit higher polarization resistance than untreated, at 11 times higher and capacitive behavior of material is related to aluminum oxide layer properties, then, microstructure characteristic caused by overlapping ratio and multi-track has a strong effect on electrochemical process. Effect of laser-remelting of surface cracks on The effects of laser remelting on microstructure of the alloyed coatings were investigated by X-ray diffraction (XRD), optical microscopy (OM), scanning electron microscopy (SEM) coupled with Influence of laser surface remelting on microstructure and Influence of laser surface remelting on microstructure and degradation mechanism in simulated body fluid of Zn-0.5Zr alloy Zheng Wang a b, Qingke Zhang a * (), Robabeh Bagheri a, Pushan Guo a, Yirong Yao a, Lijing Yang a, Zhenlun Song a * ()
However, the laser remelting of the cermet coating surface is the most recommended because it can be largely eliminated the porosity, providing a more homogeneous and densified microstructure of coatings . It is worth adding that as aresult of laser remelting, the hardness of Microstructure Characterization and Corrosion Resistance Mar 13, 2017 · From the Nyquist plot, it is noted that the diameter of the loop/arc decreases with the increase in immersion time indicating that the double-layer capacitance (C dl) increases and charge-transfer resistance (R ct) decreases substantially with the increase in immersion time. Microstructure and properties of hybrid additive Apr 22, 2020 · With the increases in laser power, the microhardness of LR layer reduces owing to that the volume fraction of phase decreases (Fig. 6 and Table 3). The microhardness results of DED 316L are in accordance with those of other AM 316L steel because of similar microstructure.
Request PDF Effects of laser remelting on microstructures and immersion corrosion performance of arc sprayed Al coating in 3.5% NaCl solution An arc sprayed aluminum (Al) coating on S355 steel