TY - JFULL AU - A. Ismaeel and C. S. Wang and D. S. Xu PY - 2020/4/ TI - The Effects of Electromagnetic Stirring on Microstructure and Properties of γ-TiAl Based Alloys Fabricated by Selective Laser Melting Technique T2 - International Journal of Aerospace and Mechanical Engineering SP - 130 EP - 136 VL - 14 SN - 1307-6892 UR - https://publications.waset.org/pdf/10011119 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 159, 2020 N2 - The γ-TiAl based Ti-Al-Mn-Nb alloys were fabricated by selective laser melting (SLM) on the TC4 substrate. The microstructures of the alloys were investigated in detail. The results reveal that the alloy without electromagnetic stirring (EMS) consists of γ-TiAl phase with tetragonal structure and α2-Ti3Al phase with hcp structure, while the alloy with applied EMS consists of γ-TiAl, α2-Ti3Al and α-Ti with hcp structure, and the morphological structure of the alloy without EMS which exhibits near lamellar structure and the alloy with EMS shows duplex structure, the alloy without EMS shows some microcracks and pores while they are not observed in the alloy without EMS. The microhardness and wear resistance values decrease with applied EMS. ER -