| Zr-Cu-Al三元合金大块金属玻璃的形成能力及热稳定性 |
| |
| 引用本文： | 李旭飞,方守狮,肖学山.Zr-Cu-Al三元合金大块金属玻璃的形成能力及热稳定性[J].上海大学学报(自然科学版),2005,11(5):527-530. |
| |
| 作者姓名： | 李旭飞 方守狮 肖学山 |
| |
| 作者单位： | 上海大学材料科学与工程学院,上海200072 |
| |
| 基金项目： | 国家自然科学基金资助项目（50201009） |
| |
| 摘 要： | 用水冷铜模吸铸的方法制备了直径为3mm的Zr85-xCuxAl15（x=25、30、35、40和45）合金棒．用X射线衍射（XRD）、差分扫描量热（DSC）和差分热分析（DTA）测试，结果表明：Zr55Cu30Al15和Zr50Cu35Al15，为完全非晶，且Zr50Cu35Al15为近共晶成分，其玻璃形成能力和热稳定性最佳．运用Miedema半经验模型对该合金系的非晶形成焓进行了理论分析计算，其结果与实验基本符合．
|
| 关 键 词： | 大块金属玻璃 玻璃形成能力 Miedema’s模型 |
| 文章编号： | 1007-2861（2005）05-0527-04 |
| 收稿时间： | 2004-10-09 |
| 修稿时间： | 2004年10月9日 |
Formation-Ability and Thermal Stability of Ternary Zr-Cu-Al Bulk Metallic Glass |
| |
| LI Xu-fei, FANG Shou-shi, XIAO Xue-shan.Formation-Ability and Thermal Stability of Ternary Zr-Cu-Al Bulk Metallic Glass[J].Journal of Shanghai University(Natural Science),2005,11(5):527-530. |
| |
| Authors: | LI Xu-fei FANG Shou-shi XIAO Xue-shan |
| |
| Abstract: | Ingots with nominal compositions of (Zr_(85-x)Cu_xAl_(15)) (x=25, 30, 35, 40 and 45) were prepared by suction casting with a diameter of 3 mm. Results of Xray diffraction, differential scanning calorimetry and differential thermal analysis show that (Zr_(55)Cu_(30)Al_(15)) and (Zr_(50)Cu_(35)Al_(15)) alloys are both fully amorphous. Composition of the latter is near eutectic with larger glass-forming ability and thermal stability. The amorphous formation enthalpies of all alloys have been calculated by Miedema's semi-empirical model and the results are generally consistent with that of experiments. |
| |
| Keywords: | bulk metallic glass glass-forming ability Miedema's model |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
