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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Nanocomposites VI: Nanoscience and Nanotechnology in Advanced Composites
Presentation Title Nanoparticle-enabled Phase Modification (Nano-Treating) of CuZrSi Pseudo-binary Alloy
Author(s) Gongcheng Yao, Shuihang Pan, Chezheng Cao, Maximilian Sokoluk, Xiaochun Li
On-Site Speaker (Planned) Gongcheng Yao
Abstract Scope Effectively modifying the faceted-growth phases in alloys has been a long-standing goal to improve the material properties. While traditional methods to tune the phase microstructures have reached a certain limit, dispersed nanoparticles in molten alloys are expected to effectively control the morphologies of phases. Here we report that Cu/WC nanocomposite masters, which can be readily used to process alloys, were fabricated. 1 vol.% and 4 vol.% WC nanoparticles were incorporated into a Cu-ZrCuSi pseudo-binary alloy, respectively. Results showed significant morphology modification and refinement of the CuZrSi phase upon addition of WC nanoparticles. It is inferred that heterogeneous nucleation and growth restriction of the ZrCuSi phase induced by WC nanoparticles are responsible for the morphological change. Hardness of the CuZrSi alloy with 4 vol.% WC increased by 43.4% compared to the base alloy. This novel yet simple route, nano-treating, has a tremendous potential for modifying alloys to achieve better performances.
Proceedings Inclusion? Planned:

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