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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 11    No. 2    April 2001

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Isothermal section (500 ℃) of
phase diagram of Nd-Al-Si ternary system
LONG Zhi-ling(龙志林)1, ZHOU Yi-chun(周益春)1, ZHUANG Ying-hong(庄应烘)2
CHEN Rong-zhen(陈荣贞)2, LIU Jing-qi(刘敬旗)2

1. Institute of Fundamental Mechanics and Materials Engineering,
Department of Physics, Xiangtan University, Xiangtan 411105, P.R.China;
2. Industrial Testing and Experimental Centre,
Guangxi University, Nanning 530004, P.R.China

Abstract:The isothermal section of the phase diagram of the ternary system Nd-Al-Si at 500 ℃ (Nd≤50%, mole fraction) has been constructed on the basis of the data obtained by X-ray diffraction analysis, differential thermal analysis, metallographic examination, chemical analysis and electron micro-probe analysis. The obtained diagram consists of 11 single-phase regions, 21 two-phase regions and 11 three-phase regions. There exist two limit solid solutions. The intermetallic compound NdAl1.5Si0.5 has not been found in this section. No evidence of new phase has been observed in this work.

 

Key words: Nd-Al-Si phase diagram; ternary section; neodymium aluminum silicides

ISSN 1672-7029
CN 43-1423/U

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