Classification of bulk metallic glasses by atomic size difference, heat of mixing and period of constituent elements and its application to characterization of the main alloying element
Classification of bulk metallic glasses by atomic size difference, heat of mixing and period of constituent elements and its application to characterization of the main alloying element
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DOI：
10.2320/matertrans.46.2817
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发表时间：
2005-12-01
影响因子：
1.2
通讯作者：
Inoue, A
中科院分区：
文献类型：
--
作者：
Takeuchi, A;Inoue, A
块体金属玻璃（BMG）根据其原子尺寸的差异进行了分类。混合热（Δ H-mix）和周期表中组成元素的周期。根据Inoue先前的结果，将迄今发现的BMG分为七组。七个组如下：（G-I）ETM/Ln-LTM/BM-Al/Ga、（G-II）ETM/Ln-LTM/BM-类金属、（G-III）Al/Ga-LTM/BM-类金属、（G-IV）IIA-ETM/Ln-LTM/BM、（G-V）LTM/BM-类金属、（G-VI）ETM/Ln-LTM/BM和（G-VII）IIA-LTM/BM。在ETM。Ln、LTM、BM和IIA分别是指早过渡、镧系、晚过渡、IIIB-IVB族和IIA族-族金属。三元G-I、G-V和G-VII、三元G-II和G-IV以及三元G-VI BMG的主要合金化元素与其它合金化元素相比分别是最大、中间和最小的原子半径。三元非晶合金的主要合金元素属于G-I族。G-VI和G-VII是原子对中具有最大和负值Δ H-mix（（mix）（LN））的元素。而属于G-II和G-IV的三元BMG的主元素与（mix）（LN）的原子对无关。从三元BMG导出的主元素的特征直接适用于属于G-I的多组分BMG。G-II、G-IV（Mg基BMG）、G-V和G-VII。主元素可以是与（混合）（LN）原子对中较大尺寸的元素，或者与属于G-III的多组分BMG的其他元素处于同一族中。G-IV（含Be的Zr基BMG）和G-VI.属于G-VI的BMG的主元素倾向于从三元系中具有最小原子半径的元素向多元系中具有相对大原子尺寸的元素变化。这种变化是由于通过属于G-VI的BMG的多组分合金化增加了玻璃形成能力。在本研究中获得的BMG的分类结果是重要的BMG的进一步发展，与结果提供了一个路线图，为开发新的BMG组合物。
Bulk metallic glasses (BMGs) have been classified according to the atomic size difference. heat of mixing (Delta H-mix) and period of the constituent elements in the periodic table. The BMGs discovered to date are classified into seven groups on the basis of a previous result by Inoue. The seven groups are as follows: (G-I) ETM/Ln-LTM/BM-Al/Ga, (G-II) ETM/Ln-LTM/BM-Metalloid (G-III) Al/Ga-LTM/BM-Metalloid, (G-IV) IIA-ETM/Ln-LTM/BM, (G-V) LTM/BM-Metalloid, (G-VI) ETM/Ln-LTM/BM and (G-VII) IIA-LTM/BM. where ETM. Ln, LTM, BM and IIA refer to early transition, lantlianide, late transition, group IIIB-IVB and group IIA-group metals, respectively. The main alloying element of ternary G-I, G-V and G-VII, ternary G-II and G-IV, and tertiary G-VI BMGs is the largest, intermediate and smallest atomic radius compared to the other alloying elements, respectively. The main alloying element of tertiary BMGs belonging to G-I. G-V. G-VI and G-VII is an element in the atomic pair with the largest and negative value of Delta H-mix ((mix)(LN)). while the main element of ternary BMGs belonging to G-II and G-IV is independent of the atomic pair with (mix)(LN). The characteristics of the main element derived for the ternary BMGs are directly applicable to multicomponent BMGs belonging to G-I. G-II, G-IV (Mg-based BMGs), G-V and G-VII. The main element can be the larger-sized element in the atomic pair with (mix)(LN) or in the same group as the other elements for multicomponent BMGs belonging to G-III. G-IV (Be-containing Zr-based BMG) and G-VI. The main element of BMGs belonging to G-VI tends to change from the element with the smallest atomic radius in a ternary system to an element with a relatively large atomic size in a in multicomponent system. The change is due to an increase in glass-forming ability through multicomponent alloying of BMGs belonging to G-VI. The results of the classification of BMGs obtained in the present study are important for further development of BMGs, with the results providing a road map for the development of new BMG compositions.