Experimental investigation, thermodynamic optimization and prediction of glass-forming ability of the Nb-Ni-Sn ternary system

IF 3.2 3区 材料科学 Q1 MATERIALS SCIENCE, CERAMICS
Zongying Pan , Biao Hu , Changzheng Bu , Xin Zheng , Lin Ji , Xinyue Lan
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引用次数: 0

Abstract

At 800, 700 and 600°C, the phase equilibria of the Nb-Ni-Sn system were investigated through phases analysis of twenty-four designed equilibrated alloys. By analyzing the experimental results, it can be found that the addition of Ni can improve the stability of the Nb6Sn5 phase to be stable at below 700°C. In addition, the ternary compound NbNi2Sn was confirmed with the composition of about Nb24.5-23.2Ni49.8-53.5Sn25.6-23.3 (in at.%). The sublattice model Nb1Ni2(Ni, Sn)1 was used to describe the NbNi2Sn compound. The thermodynamic parameters of the Nb-Ni-Sn system were assessed by means of the CALPHAD methodology. Finally, the driving force of each phase in supercooled liquid phase was calculated by using the evaluation results, and the predicted composition region with high glass forming ability is very consistent with the literature data.
Nb-Ni-Sn三元体系玻璃形成能力的实验研究、热力学优化及预测
在800、700和600℃时,通过对24种设计的平衡合金的物相分析,研究了Nb-Ni-Sn体系的相平衡。通过对实验结果的分析,可以发现Ni的加入可以提高Nb6Sn5相的稳定性,在700℃以下保持稳定。此外,确定了三元化合物NbNi2Sn,其组成约为Nb24.5-23.2Ni49.8-53.5Sn25.6-23.3 (at.%)。采用Nb1Ni2(Ni, Sn)1亚晶格模型来描述NbNi2Sn化合物。采用CALPHAD方法对Nb-Ni-Sn体系的热力学参数进行了评价。最后,利用评价结果计算了过冷液相中各相的驱动力,预测的高玻璃化能力成分区域与文献数据非常吻合。
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来源期刊
Journal of Non-crystalline Solids
Journal of Non-crystalline Solids 工程技术-材料科学:硅酸盐
CiteScore
6.50
自引率
11.40%
发文量
576
审稿时长
35 days
期刊介绍: The Journal of Non-Crystalline Solids publishes review articles, research papers, and Letters to the Editor on amorphous and glassy materials, including inorganic, organic, polymeric, hybrid and metallic systems. Papers on partially glassy materials, such as glass-ceramics and glass-matrix composites, and papers involving the liquid state are also included in so far as the properties of the liquid are relevant for the formation of the solid. In all cases the papers must demonstrate both novelty and importance to the field, by way of significant advances in understanding or application of non-crystalline solids; in the case of Letters, a compelling case must also be made for expedited handling.
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