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| 1 | RESEARCH ON LASER DIRECT DEPOSITION PROCESS OF Ti-6Al-4V ALLOY显示文摘Laser direct deposition (LDD) of metallic components is an advanced technology of combining CAD/CAM (computer aided design/computer aided manufacturing), high power laser, and rapid prototyping. This technology uses laser beam to melt the powders fed coaxially into the molten pool by the laser beam to fabricate fully dense metallic components. The present article mainly studies the LDD of Ti-6Al-4V alloy, which can be used to fabricate aircraft components. The mechanical properties of the Ti-6Al-4V alloy, fabricated by LDD, are obtained using the tension test, and the oxygen content of used powders and deposited specimens are measured. In the present article, it can be seen that the mechanical properties obtained using this method are higher than the ones obtained by casting, and equal to those got by wrought anneal. One aircraft part has been made using the LDD process. Because of this aircraft part, with sophisticated shape, the effect of the laser scanning track on the internal soundness of the deposited part was discussed. | S.Y. Gao Y.Z. Zhang L.K. Shi B.L. Du M.Z. Xi H.Z. Ji | 2007 | Acta Metallurgica Sinica(English Letters)2007，20，3： | 2 |
| 2 | EFFECTS OF TREATMENT TEMPERATURE ON THE MICROSTRUCTURE AND MAGNETIC PROPERTIES OF Fe-N THIN FILMS显示文摘Fe-N thin films were fabricated on both 100Si and NaCl substrates by RF magnetron sputtering under low nitrogen partial pressure. The microstructure and magnetic properties of Fe-N thin films were investigated with the increase of the substrate temperature (Ts) and the annealing temperature (Ta). It is more difficult for nitrogen atoms to enter the Fe lattice under higher Ts above 150℃. The phase evolution is visible at higher Ta above 200℃. The phase transformation of α''-Fe16N2 occurred at 400℃. The change of crystal size with Ta was clearly visible from bright and dark field images. The clear high-resolution electron microscope (HREM) images of 110α, 111γ', 112α'', and 200α'' phases were observed. The interplanar distances from TEM (transmission electron microscope) and HREM match the calculated values very well. From the results of the vibrating sample magnetometer (VSM), the good magnetic properties of Fe-N films were obtained at 150℃ of Ts and 200℃ of Ta, respectively. | B.L. Li H.M. Du X.F. Wang E.Y. Jiang Z.Q.Li P. Wu | 2007 | Acta Metallurgica Sinica(English Letters)2007，20，4： | 1 |
| 3 | Enhanced thermoelectric performance in Na-doped p -type nonstoichiometric AgSbTe 2 compound显示文摘 | B.L. Du H. Li X.F. Tang | 2010 | Journal of Alloys and Compounds2010，，5： | 1 |
| 4 | Surface thermal shock fracture of a semi-infinite piezoelectric medium (poling axis parallel to the crack plane)显示文摘 | B.L. Wang N. Noda J.C. Han S.Y. Du | 2002 | Mechanics of Materials2002，，3： | 1 |
| 5 | Fragmentation of large grains in AZ31 magnesium alloy during ECAE via route A显示文摘 | B.L. Wu G. Wan Y.D. Zhang X.H. Du F. Wagner C. Esling | 2010 | Materials Science & Engineering A2010，，： | 1 |
| 6 | Enhanced drought and salinity tolerance in transgenic potato plants with a BADH gene from spinach显示文摘 | Zhang N Si H.J Wen G Du H.H. Liu B.L. Wang D | | 0，，01： | 1 |
| 7 | Effect of V on the microstructure and mechanical properties of Mg–10Er–2Cu alloy with a long period stacking ordered structure显示文摘 | X.H. Du G.S. Duan M. Hong D.P. Wang B.L. Wu Y.D. Zhang C. Esling | 2014 | Materials Letters2014，，： | 1 |
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