中国铸造2005，Vol.2Issue(1)：1-6,6.
Evaluation of glass forming ability of alloys
Evaluation of glass forming ability of alloys
1
作者信息
- 1. Department of Materials Science and Engineering, Southeast University, Nanjing 210096, Jiangsu, P. R. China;Department of Materials Science and Engineering, Southeast University, Nanjing 210096, Jiangsu, P. R. China;Department of Materials Science and Engineering, Southeast University, Nanjing 210096, Jiangsu, P. R. China
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摘要
Abstract
Key step of exploiting a new type BMG (Bulk Metallic Glass) is quickly judging GFA (Glass Forming Ability) of the alloys. The mole melting heats of BMGs are calculated using the weighted averages principle. The reliability and limitation of Trg criterion for CFA are discussed. The reason why Trg of BMGs is larger than 0.5 is discussed. Two new criteria for GFA, △Hmg and △Gg, are proposed. GFA sequence of BMGs is calculated using the △Hmg criterion, the result agrees with that of A. Inoue and the Rc criterion. Furthermore, as an example, the Rc of the alloys developed by Chuang DONG et al is calculated using the △Hmg and △Gg. The ascending sequence of these alloys calculated with the △Hmg criterion agrees with that of Chuang DONG et al. On the contrary, the result by the △Gg criterion is in contrary with Chuang DONG et al, indicating that the △Hmg criterion is better and more convenient than the △Gg criterion. Calculation showed that the optimum △Hmg iS -15.16 k J/mol.关键词
bulk metallic glasses/glass forming ability/weighted averages principle/GFA criterionKey words
bulk metallic glasses/glass forming ability/weighted averages principle/GFA criterion分类
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..Evaluation of glass forming ability of alloys[J].中国铸造,2005,2(1):1-6,6.
