EBSD Study of Crystallographic Identification on Fe-Al-Si Intermetallic Phases in Aluminide Coatings on Mild Steels
Mild steels were coated by hot-dipping in molten aluminum and aluminum-silicon baths at 700 ℃ for 180 seconds. Phase identification of the Fe-Al or Fe-Al-Si intermetallic compounds in the hot-dipped aluminide steel was carried out by using a combination of scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD) and electron backscatter diffraction (EBSD). The results showed that the aluminide layer of the hot-dipped aluminum steel possessed a thicker intermetallic layer than that of the hot-dipped aluminum-silicon steel which was composed of minor monoclinic FeAl3 and major orthorhombic Fe2Al5. The intermetallic layer of the hot-dipped aluminum-silicon steel was composed of not only the same FeAl3 and Fe2Al5 phases in the hot-dipped aluminum steel but also Fe-Al-Si intermetallic compounds of hexagonal Al7Fe2Si and tetragonal (Al,Si)5Fe3.
Mild steel Hot-dipping Phase identification Aluminide layer EBSD
Wei-Jen Cheng Chaur-Jeng Wang
Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan
国际会议
青岛
英文
907-910
2009-10-09（万方平台首次上网日期，不代表论文的发表时间）