Bowen WANG
,
Changheng WU
,
Yuzhi CHUANG and Ximei JIN (Institute of Metal Research
,
Chinese Academy of Sciences
,
Shenyang 110015
,
China)(To whom correspondence should be addressed)(Present address: Shenyang Institute of Technology Shenyang
,
110015
,
China)
材料科学技术（英文）
The microstructure and phase relationship of (Dy0.65Tb0.25Pr0.1)Fex alloys in the composition range of 1.6≤x≤2.1 were investigated using optical microscopy, X-ray diffraction , DTA and EPMA techniques. The variations of microstructure and lattice parameter with the iron content,the effect of heat treatment on the microstructure and the phase relationship have been studied.The phase relationship in the vicinity of the Laves phase is proposed
关键词:
Bowen WANG
,
Weili LIU
,
Guang JIN
,
Jianzhi BI
,
Ximei JIN
,
Zhijun GUO
,
Zhidong ZHANG
材料科学技术（英文）
The structure and magnetostriction of R0.5Pr0.5Fex, (R = Dy0.7Tb0.3, 1.10 less than or equal to x less than or equal to 1.85) alloys were investigated. It was found that the matrix of are-melting R0.5Pr0.5Fex, alloys is the (Dy, Tb, Pr) Fe-2 phase with the MgCu2-type cubic structure and the second phase is rare earth-rich phase when x<1.25. In the range of 1.40 less than or equal to x<1.55, the second phase is (Dy, Tb, Pr)Fe-3 and it becomes the main phase when x >1.55. The crystalline structure of mechanically grinding R0.5Pr0.5Fex, alloys is similar to that of the are-melted alloys. The magnetostriction of the alloys increases with increasing Fe content when x less than or equal to 1.25 and decreases when x>1.25.
关键词:
