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Pure, Li-doped and Ca-doped titanium dioxide nanofibers have been successfully produced by combining sol gel synthesis and electrospinning. The influence of lithium and calcium doping and calcination under vacuum on morphology, including grain size, nanofiber diameter and continuity, was observed by SEM. The phase composition was analyzed by X-ray diffraction. It was found that lithium doping increased...
A multi-physical field coupling numerical model is built to reproduce the deep cryogenic treatment (DCT) of a cold work die steel Cr8Mo2SiV (SDC99) Navy C-ring specimen immersed in liquid nitrogen and to investigate the retained austenite evolution. In addition, the predicted results are validated via X-ray diffraction (XRD) analysis. The results indicate that, after QT, a large amount of unstable...
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