To investigate the effect of rare earth on size and distribution of TiB2 phase in aluminum alloy refiner,Al-5Ti-1B-RE master alloy was fabricated,and its microstructure and phase constitutions were investigated by the...To investigate the effect of rare earth on size and distribution of TiB2 phase in aluminum alloy refiner,Al-5Ti-1B-RE master alloy was fabricated,and its microstructure and phase constitutions were investigated by the combination of first principles calculations and experimental investigation.The calculated results reveal that Ce has the most effective modification ability due to the most positive adsorption energy and the largest charge transfer value compared with other rare earth elements.Results of experimental investigation indicate that the addition of rare earth in the Al-5Ti-1B alloys can greatly refine the particle size of TiB2,improve the distribution of particles and lead to better refinement effect than that of the Al-5Ti-1B alloys without rare earth.Moreover,Ce has the best optimization effect,which agrees well with the calculated results.展开更多
基金Project(52265043)supported by the National Natural Science Foundation of ChinaProject(2021A1515010470)supported by the Natural Science Foundation of Guangdong Province,China+1 种基金Project(ZK2023(014))supported by the Guizhou Provincial Science and Technology Projects,ChinaProject(YQK[2023]011)supported by the Outstanding Youth Science and Technology Talent Project of Guizhou Province,China。
基金supported by the Natural Science Foundation of Inner Mongolia Autonomous Region(Grant No.2021MS05049)the Youth Fund Project of State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization(Grant No.2021Z2348)the Project of China North Rare Earth(Group)High-tech Co.,Ltd.(Grant No.2020H2177).
文摘To investigate the effect of rare earth on size and distribution of TiB2 phase in aluminum alloy refiner,Al-5Ti-1B-RE master alloy was fabricated,and its microstructure and phase constitutions were investigated by the combination of first principles calculations and experimental investigation.The calculated results reveal that Ce has the most effective modification ability due to the most positive adsorption energy and the largest charge transfer value compared with other rare earth elements.Results of experimental investigation indicate that the addition of rare earth in the Al-5Ti-1B alloys can greatly refine the particle size of TiB2,improve the distribution of particles and lead to better refinement effect than that of the Al-5Ti-1B alloys without rare earth.Moreover,Ce has the best optimization effect,which agrees well with the calculated results.
