Effect of Rare Earth and Transition Metal Elements on the Glass Forming Ability of Mechanical Alloyed Al–TM–RE Based Amorphous Alloys

被引：3

作者：

Ram S.Maurya ^{[1
]}

Tapas Laha ^{[1
]}

机构：

[1] Department of Metallurgical & Materials Engineering, Indian Institute of Technology Kharagpur

来源：

JournalofMaterialsScience&Technology | 2015年 / 31卷 / 11期

关键词：

Al–TM–RE amorphous alloy; Mechanical alloying; Glass forming ability; Microstructural transformation; Intermetallics; Glass transition temperature;

D O I：

暂无

中图分类号：

TG139.8 [];

学科分类号：

080502 ;

摘要：

The present work aims to compare the amorphous phase forming ability of ternary and quaternary Al based alloys(Al86Ni8Y6, Al86Ni6Y6Co2, Al86Ni8La6 and Al86Ni8Y4.5La1.5) synthesized via mechanical alloying by varying the composition, i.e. fully or partially replacing rare earth(RE) and transition metal(TM) elements based on similar atomic radii and coordination number. X-ray diffraction and high resolution transmission electron microscopy study revealed that the amorphization process occurred through formation of various intermetallic phases and nanocrystalline FCC Al. Fully amorphous phase was obtained for the alloys not containing lanthanum, whereas the other alloys containing La showed partial amorphization with reappearance of intermetallic phases attributed to mechanical crystallization. Differential scanning calorimetry study confirmed better thermal stability with wider transformation temperature for the alloys without La.

引用

页码：1118 / 1124

页数：7

共 16 条

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