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by femtosecond laser pulse trains [J]. Appl Phys Lett, 2005, 87: 151104. [12] JIANG L, TSAI H L. Improved two-temperature model and its application in ultrashort laser heating of metal films [J]. J Heat... Sub-micron-structure machining on silicon by femtosecond laser Hung-Yin TSAI 1, Shao-Wei LUO1, Chih-Wei WU 2, Shing-Hoa WANG 2 1. Department of Power Mechanical Engineering, National......
experiments were performed on a 2 kW CO2 laser (SLCF-12 25, China). During laser cladding, high frequency induction heating equipment was used to slow cooling. The laser cladding parameters... on the surface of the coating; argon gas was blown into the molten pool to provide shielding during laser cladding. Assisted heating was performed by a high frequency induction heating equipment (HFP-30......
of the laser clad coating. The excellent adhesion of TiNi intermetallic and frication-induced heating effect make the wear debris particles from hardened 0.45%C steel mating wheel easy adhere to the surface... Trans. Nonferrous Met. Soc. China 22(2012) 1667-1673 Microstructure and wear resistance of laser clad TiB-TiC/TiNi-Ti2Ni intermetallic coating on titanium alloy FENG Shu-rong1,2, TANG Hai-bo1,2......
): 1528-1543. [29] XU T, ZHENG L, WANG K, MISRA R D K. Unified mechanism of intergranular embrittlement based on non-equilibrium grain boundary segregation[J]. International Materials Reviews, 2013, 58(5..., 1996, 44(5): 1857-1864. [32] XU T D, CHENG B Y. Kinetics of non-equilibrium grain-boundary segregation[J]. Progress in Materials Science, 2004, 49(2): 9-208. Effect of times in heat straightening......
the availability of heat energy, achieving the "green, non-pollution and quick" maintenance requirements. 3 Heating device and discussions 3.1 Structural design and optimization of multi- layer heating device... J. Cent. South Univ. (2020) 27: 3793-3806 DOI: https://doi.org/10.1007/s11771-020-4577-6 Numerical simulation analysis on multi-layer low-temperature heating method of asphalt pavement in hot......
-like precipitate clusters near the grain and dendrite boundaries of the vanadium alloys due to the non-equilibrium solidification of the LMD process [13]. Since there is no structural transformation... in the LMD vanadium alloys are formed due to the segregations of Ti, C, N, and O elements near the grain and dendrite boundaries after the non-equilibrium solidification (see Figure 2(a)). Compared......
Laser forming thin aluminum sheetsLI Li-qun(李俐群), CHEN Yan-bin(陈彦宾), LIN Shang-yang(林尚扬)(State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 15001, China)Abstract:Laser forming is a flexible forming process that forms sheet metal by means of laser-induced stresses instead of by means of external force. With the rapid development of laser......
LASER LIFT-OFF OF GaN THIN FILMS FROM SAPPHIRE SUBSTRATES B.Shen1,Y.P.Wang1,X.Q.Xiu1,Y.D.Zheng1,Z.G.Liu1,Y.Shi1,R.Zhang1,S.L.Gu1,J.Xu1 (1.Department of Physics and National Laboratory of Solid State Microstructures, Nanjing University. Nan1ing 210093, China) Abstract:Gallium Nitride film was successfully separated from sapphire substrate by laser radi-ation. The absorption of the 248nm......
Solidification process of conventional superalloy by confocal scanning laser microscope MIAO Zhu-jun1, SHAN Ai-dang1, WANG Wei2, LU Jun3, XU Wen-liang3, SONG Hong-wei3 1. School of Materials... of a conventional superalloy, IN718, was investigated by confocal scanning laser microscope (CSLM). The liquid fraction during solidification was obtained as a function of real time and temperature......
in the atmosphere of H2 by laser heating gas-evaporation method with 100W CO2 laser. The laser target was made of Zn particles or the powder of Zn(Ac)2·2H2O. The Zn nanocrystals were characterized by XRD, TEM, ED...献标识码: A Preparation of Zn nanocrystals with different morphologies by laser ablation GUO Guang-sheng, GU Fu-bo, WANG Zhi-hua, LI Duo, GUO Hong-you (Key Lab for Science and Technology......
