arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.10574cond-mat.mtrl-sci
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碳化铌和碳化钛的团簇动力学模拟

Cluster Dynamics Modeling of Niobium and Titanium Carbide Precipitates

Nadezda Korepanova, Mihai Dima, Long Gu, Hushan Xu

摘要:

用集团动力学方法模拟了铌和碳化钛在铁中的析出动力学。模拟,分别在奥氏体和铁素体中进行的碳化铌,在奥氏体中的碳化钛,进行了分析依赖于温度,溶质浓度,和初始集群分布。不同的温度和溶质浓度的结果,并与现有的实验数据进行比较。它们显示出初始团簇分布超过一定的弛豫时间的影响很小,并且仅具有单体的高度稀释的合金呈现出与稀释度较低的合金或具有不同初始团簇分布的合金显著不同的行为。

英文摘要:

Kinetics of niobium and titanium carbide precipitates in iron has been simulated with cluster dynamics. The simulations, carried out in austenite and ferrite for niobium carbides, respectively in austenite for titanium carbide, were analyzed for dependency on temperature, solute concentration, and initial cluster distribution. The results are presented for different temperatures and solute concentrations and compared to available experimental data. They show little impact of initial cluster distribution beyond a certain relaxation time and that highly dilute alloys with only monomers present a significantly different behavior than less dilute alloys or alloys with different initial cluster distribution.

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