General role of rare earth elements in dynamic characteristic of series of FeB-based bulk-glass-forming liquids
General role of rare earth elements in dynamic characteristic of series of FeB-based bulk-glass-forming liquids
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稀土元素对系列 FeB 基大块玻璃形成液动态特性的一般作用
DOI：
10.1016/j.jnoncrysol.2021.121119
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发表时间：
2021-11
影响因子：
3.5
通讯作者：
K.K. Song
中科院分区：
文献类型：
--
作者：
Y.W. Bai;L.N. Hu;J.Y. Qin;Z. Wang;K.K. Song
研究了几种系列添加稀土元素的FeB基块体玻璃形成熔体的粘度。熔体中普遍存在粘度不连续性。随着稀土元素的加入，这种动态转变变得不明显。通过过热液体脆性的概念，稀土元素的加入显著地降低了动态转变F的程度，从大于1到小于1。F和GFA之间一般呈负相关。通过第一性原理分子动力学模拟，发现在B原子周围形成正方形反棱柱结构和稳定的含稀土元素的<0，3，6，0>多面体之间的竞争决定了FeB基液体的F值和GFA。本工作揭示了稀土元素显著提高合金玻璃形成能力的机理，为获得大尺寸铁基玻璃提供了一条新的途径。
We investigated the viscosities of several series of FeB-based bulk-glass-forming melts with rare earth element additions. The viscosity discontinuity generally exists in the melts. With the rare earth element addition, such dynamic transition becomes indistinct. By the concept of superheated liquid fragility, the addition of rare earth elements significantly reduces the degree of the dynamic transitionFfrom larger than 1 to less than 1. A generally negative correlation betweenFand GFA has been demonstrated. By conducting theab initiomolecular dynamics simulations, the competition between the formations of square antiprism structures and the stable rare-earth-contained <0, 3, 6, 0> polyhedra around B atoms have been found to determine theFvalue, as well as the GFA of FeB-based liquids. This work demonstrates the mechanism underlying which the glass-forming ability of alloys is greatly improved by rare earth elements, and provides a novel route to obtain bulk-size Fe-based glasses.
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影响因子：
19.6
作者：
Shuai Wei;Isabella Gallino;R. Busch;C. Angell
通讯作者：
Shuai Wei;Isabella Gallino;R. Busch;C. Angell
DOI：
10.1063/1.4907374
发表时间：
2015-02
期刊：
The Journal of chemical physics
影响因子：
--
作者：
Chao Zhou;Lina Hu;Qijing Sun;Haijiao Zheng;Chunzhi Zhang;Y. Yue
通讯作者：
Chao Zhou;Lina Hu;Qijing Sun;Haijiao Zheng;Chunzhi Zhang;Y. Yue
影响因子：
1.2
作者：
A. Inoue;A. Takeuchi;B. Shen
通讯作者：
A. Inoue;A. Takeuchi;B. Shen
局部结构，成核位点和结晶行为及其对Fe（81）Si（x）B（10）p（8-x）cu（1）（x = 0〜8）的磁性特性的影响。
影响因子：
4.6
作者：
Cao CC;Wang YG;Zhu L;Meng Y;Zhai XB;Dai YD;Chen JK;Pan FM
通讯作者：
Pan FM
影响因子：
6.2
作者：
H. Chang;Yufen Huang;Chia-Chan Chang;C. Hsieh;W. Chang
通讯作者：
H. Chang;Yufen Huang;Chia-Chan Chang;C. Hsieh;W. Chang