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Effects of cooling rate and sub-Tg annealing on Ni80P20 metallic glass: A molecular dynamic (MD) study
Computational Materials Science ( IF 3.1 ) Pub Date : 2020-06-01 , DOI: 10.1016/j.commatsci.2020.109681
Fateh Hayat , Jian Yin , Aasma Tabassum , Huaiyu Hou , Si Lan , Tao Feng

Abstract In present work Molecular dynamic (MD) simulations have been employed to simulate the Ni80P20 metallic glass at different cooling rates and with Sub-Tg annealing during the cooling process, first time to study the effects of cooling rate and Sub-Tg annealing on Ni80P20 metallic glass. Sub-Tg annealing method during the cooling process and cooling rate influences on structural relaxation, coordination, dynamical behavior, icosahedra environment and average cluster energy of Ni80P20 metallic glass. Structural relaxation was studied through the average potential energy of the system which decreased on slow cooling rates and with Sub-Tg annealing. Dynamical behavior of Ni80P20 metallic glass was investigated through diffusivity. The solute centered icosahedra clusters , and enhanced by low cooling rate and with Sub-Tg annealing.

中文翻译:

冷却速率和亚 Tg 退火对 Ni80P20 金属玻璃的影响:分子动力学 (MD) 研究

摘要 在目前的工作中,分子动力学 (MD) 模拟已被用来模拟 Ni80P20 金属玻璃在不同冷却速率下和在冷却过程中进行亚 Tg 退火,首次研究了冷却速率和亚 Tg 退火对 Ni80P20 的影响。金属玻璃。冷却过程中的亚Tg退火方法和冷却速率对Ni80P20金属玻璃的结构松弛、配位、动力学行为、二十面体环境和平均簇能的影响。通过系统的平均势能研究结构松弛,该势能在缓慢冷却速率和亚 Tg 退火时降低。通过扩散系数研究了 Ni80P20 金属玻璃的动力学行为。以溶质为中心的二十面体簇,并通过低冷却速率和亚 Tg 退火增强。
更新日期:2020-06-01
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