Friction Stir Welding of Bulk Metallic Glass Vitreloy 106a
作者： Xiaoqian Ma , Stanley M. Howard , Bharat K. Jasthi
DOI: 10.1115/1.4027941
关键词: Metallurgy 、 Amorphous metal 、 Zirconium 、 Welding 、 Friction stir welding 、 Materials science
摘要: A Zr58.5Nb2.8Cu15.6Ni12.8Al10.3 (Vitreloy 106a) bulk metallic glass (BMG) was successfully welded by friction stir welding (FSW) with a fixed polycrystalline cubic boron nitride (PCBN) pin tool below its crystallization temperature. The microstructure was analyzed by X-ray diffraction (XRD) to evaluate the crystallization of the weld. The reduced radial distribution function (RDF), short-range order (SRO) domain size, and atomic pair distribution function (PDF) were analyzed to evaluate the effect of FSW at atomic scale. As a result, the SRO domain size was reduced for the weld surface, while increased for the weld nugget.
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