Laser & Optoelectronics Progress, Volume. 57, Issue 1, 011404(2020)
Microstructure and Corrosion Behavior of Ultra-High Strength Steel 300M After Laser Surface Remelting
Fig. 2. Energy density distribution of Gaussian heat source and surface morphologies of laser remelting layer. (a) Energy density distribution of Gaussian heat source; (b) macro morphology; (c) micro morphology of x-y cross section when P=600 W and S=66 mm/s ; (d) micro morphology of x-y cross section of remelting layer when P=300 W and S=33 mm/s; (e) micro morphology of y-z cross section of remelting layer when P=600 W and S=66 mm/s; (f) mi
Fig. 3. Microstructures of different regions of laser remelting layer in x-y direction for different parameters. (a) P=300 W, S=33 mm/s, weld zone; (b) P=300 W, S=33 mm/s, weld remelting zone; (c) P=600 W, S=66 mm/s, weld zone; (d) P=600 W, S=66 mm/s, weld remelting zone
Fig. 5. Microhardness contour maps of laser remelting layer for different parameters. (a) P=600 W, S=66 mm/s; (b) P=300 W, S=33 mm/s
Fig. 6. Polarization plots of substrate and remelted samples in 3.5% NaCl solution
Fig. 7. Electrochemical impedance spectra ofsubstrate and remelted samples in 3.5% NaCl solution. (a) Nyquist plots; (b) Bode plots (impedance); (c) Bode plots (phase angle)
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Wei Xu, Xiaoguang Wang, Zhengxing Men. Microstructure and Corrosion Behavior of Ultra-High Strength Steel 300M After Laser Surface Remelting[J]. Laser & Optoelectronics Progress, 2020, 57(1): 011404
Category: Lasers and Laser Optics
Received: Jun. 1, 2019
Accepted: Jul. 10, 2019
Published Online: Jan. 3, 2020
The Author Email: Xu Wei (354395583@qq.com), Wang Xiaoguang (quantumbit@foxmail.com), Men Zhengxing (25773211@qq.com)