Highly Glass-Forming Alloys with Very Low Glass Transition Temperature and Controllable Microstructure

机译：具有非常低的玻璃化转变温度和可控的微结构的高玻璃形成合金

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The new rare-earth Pr- and Nd-based bulk metallic glasses (BMG) are formed in the shape of rod up to 8 mm in diameter. Unlike other rare-earth based BMGs, they are full amorphous phase, and exhibit a distinct glass transition, a low glass transition temperature, (the lowest value of T_g = 409 K which is the smallest T_g among BMGs so far), and a large and stable supercooled liquid region. The BMGs offers an ideal model to investigate the relaxation, nucleation and the nature of glass transition with a large experimentally accessible time and temperature window at low temperature region. It is found that the microstructure of the alloy systems can be controlled from a full amorphous phase with paramagnetic property to nanocrystalline phase with hard magnetic property by the controlling the Fe content. The glass transition of the Pr-BMGs has been studied.

机译：新型稀土基于Pr和Nd的块状金属玻璃（BMG）形成为直径最大为8 mm的棒状。与其他稀土基BMG不同，它们是完全非晶态的，并且具有明显的玻璃化转变，低玻璃化转变温度（T_g的最小值= 409 K，是迄今为止BMG中最小的T_g）和大的和稳定的过冷液体区域。 BMG提供了一个理想的模型，用于在低温区域以较大的实验可访问时间和温度窗口来研究玻璃的弛豫，成核和玻璃化转变的性质。已经发现，通过控制Fe的含量，可以将合金体系的微观结构从具有顺磁性的完全非晶态相转变为具有硬磁性的纳米晶相。已研究了Pr-BMG的玻璃化转变。

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《International Symposium on Metastable, Mechanically Alloyed and Nanocrystalline Materials(ISMANAM 2003); 20030824-20030828; Foz do Lguacu; BR》|2003年|P.13-22|共10页
会议地点 Foz do Iguacu(BR);Foz do Iguacu(BR)
作者
Wei Hua Wang; Z.F. Zhao; M.B. Tang; Z. Zhang; M.X. Pan; D.Q. Zhao; R.J. Wang;
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作者单位

Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China P.R.;

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原文格式 PDF
正文语种 eng
中图分类材料结构及物理性质;
关键词
bulk metallic glasses; glass transition; nanocrystalline alloys; properties;

机译：大块金属玻璃;玻璃化转变;纳米晶合金;性能;

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6. Highly Glass-Forming Alloys with Very Low Glass Transition Temperature and Controllable Microstructure [C] . Wei Hua Wang, Z.F. Zhao, M.B. Tang, International symposium on metastable, mechanically alloyed and nanocrstalline materials . 2004

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Highly Glass-Forming Alloys with Very Low Glass Transition Temperature and Controllable Microstructure

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