DIFFRACTION STUDIES OF ICOSAHEDRAL PHASES IN THE AL-FE-W SYSTEM

被引:1
作者
MUKHOPADHYAY, NK [1 ]
WEATHERLY, GC [1 ]
LLOYD, DJ [1 ]
EMBURY, JD [1 ]
机构
[1] ALCAN INT LTD,KINGSTON RES & DEV CTR,KINGSTON K7L 4X4,ON,CANADA
关键词
D O I
10.1016/0022-3093(93)90315-O
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
A variety of diffraction effects has been observed in electron diffraction patterns recorded from the fivefold axis of and icosahedral phase in an Al70Fe20W10 alloy. Both diffuse rings and changes in the shape and position of weak-intensity reflections have been observed. The diffuse rings come from a quenched-in amorphous phase in the rapidly solidified ribbon. The shift in the position of reflections has been analyzed in terms of a phason strain. The measured value lies between the predicted values calculated for the 2/1 and 3/2 rational approximant structures.
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页码:63 / 67
页数:5
相关论文
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