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In situ synthesis and hardness of TiC/Ti5Si3 composites on Ti-5Al-2.5Sn substrates by gas tungsten arc welding |
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| Authors: | Wen-qing Yan Le Dai Chi-bin Gui |
| Institution: | 1725. School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou, 510641, China 2725. School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan, 430081, China 3725. Military Representative Office of Navy, 407 Factory, Luoyang, 471039, China 4725. College of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China |
| Abstract: | TiC/Ti5Si3 composites were fabricated on Ti-5Al-2.5Sn substrates by gas tungsten arc welding (GTAW). Identification of the phases was performed using X-ray diffraction (XRD). The microstructures were analyzed using scanning electron microscopy (SEM) combined with energy-dispersive X-ray spectrometry (EDS) and optical microscopy (OM). The Vickers hardness was measured with a micro-hardness tester. The TiC/Ti5Si3 composites were obtained in a double-layer track, and the Vickers hardness of the track increased by two to three times compared with the Ti-5Al-2.5Sn substrate. |
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