Interfacial structure and pore formation mechanism during laser cladding of pure vanadium on Ti-6Al-4V alloy
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Abstract
Abstract The interfacial structure and pore formation mechanism of V, which was laser cladded under various conditions with 17-4PH alloys on a Ti-6Al-4V plate, were studied using optical and scanning electron microscopy and an electron probe microanalyzer. Pores were formed in the interfacial regions of the cladded V. Moreover, upon high energy input, more prominent pores were observed, which was confirmed by the effect of V oxide generated during laser cladding. Cracks and delamination occurred when the 17-4PH alloy was additionally cladded due to pore generation owing to the high energy input used for V cladding.
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