Microstructures and mechanical properties of nano-WC reinforced Ti-44.5Al-5Nb-0.5W-0.5C-0.2B alloy prepared by hot isostatic pressing
作者： Wei Li , Ming Li , Jie Liu , Yi Yang , Daosheng Cai
DOI: 10.1016/J.JALLCOM.2018.08.181
关键词: Nanocomposite 、 Composite material 、 Materials science 、 Ultimate tensile strength 、 Hot isostatic pressing 、 Alloy 、 Ductility 、 Shearing (physics) 、 Nano- 、 Microstructure
摘要: Abstract With the aim of improving strength and ductility TiAl alloy, for first time, nano-WC is introduced to reinforce Ti-44.5Al-5Nb-0.5W-0.5C-0.2B through hot isostatic pressing (HIP). The effect contents on microstructures mechanical properties are systematically studied, specifically, alloy with 2 wt% content shows highest tensile (830 ± 33 MPa) (3.9 ± 0.2%), which mainly attributed grain refinement strengthening precipitate shearing effects. Our findings provide a realistic approach design novel TiAl/WC nanocomposite processed by HIP superior strength-ductility combination practical structural applications.
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