In the present work, three kinds of alloys with nominal compositions (at. %) of Ni-25Al, Ni-15Al-10Si and Ni-5Al-20Si have been fabricated successfully by a 10 kW continuous wave CO2 laser under optimum processing conditions. X-ray diffraction (XRD) results showed that the phases of all alloys consisted mainly of Ni-Al type intermetallic compounds. The microstructures of three alloys were characterized using scanning electron microscopy (SEM). The hardness was measured on a HX-1000TM Vickers microhardness tester. The average hardness of Ni-15Al-10Si alloy was the highest value of 914 HV compared with Ni-25Al and Ni-5Al-20Si alloys.
Nonequilibrium synthesis of Ni-Al-Si alloys by laser processing
Yufeng Zheng, Yaoning Sun, Ding Fan, Min Zheng, Jianbin Zhang; October 14–18, 2018. "Nonequilibrium synthesis of Ni-Al-Si alloys by laser processing." Proceedings of the International Congress on Applications of Lasers & Electro-Optics. ICALEO® 2008: 27th International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing. Orlando, FL, USA. (pp. pp. 870-874). ASME. https://doi.org/10.2351/1.5057143
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