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Characterization of mechanical nanocrystallization process of amorphous Fe–Mo–Si–B alloy by transmission Mössbauer spectroscopy

Published online by Cambridge University Press:  31 January 2011

X. D. Liu ,
F. Q. Guo ,
K. Lu  and
M. Umemoto
X. D. Liu
Affiliation:
State Key Lab for RSA, Institute of Metal Research, Academia Sinica, Shenyang 110015, People's Republic of China
F. Q. Guo
Affiliation:
State Key Lab for RSA, Institute of Metal Research, Academia Sinica, Shenyang 110015, People's Republic of China
K. Lu
Affiliation:
State Key Lab for RSA, Institute of Metal Research, Academia Sinica, Shenyang 110015, People's Republic of China
M. Umemoto
Affiliation:
Department of Production Systems Engineering, Faculty of Engineering, Toyohashi University of Technology, Tempaku-cho, Toyohashi 441, Japan
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Abstract

The nanocrystallization process of the amorphous Fe–Mo–Si–B alloy under ball milling is characterized by means of transmission Mössbauer emission spectroscopy (TMES) in the present paper. It was found that a single α–Fe phase with the bcc structure is formed under ball-milling the amorphous Fe–Mo–Si–B alloy. A significant increase in the relative area of the subspectra of 8Fenn and 7Fenn and a remarkable decrease in isomer shift and half linewidth of the subspectra of various Fe configurations, especially in the case of 6Fenn, were observed during the ball-milling process. The diffusion of metalloid atoms from the bcc α–Fe phase to the remaining amorphous phase and α–Fe/α–Fe grain boundaries is suggested to occur during the mechanical crystallization of the current amorphous alloy based on the above TMES investigations.

Type
Articles
Information
Journal of Materials Research , Volume 12 , Issue 3 , March 1997 , pp. 681 - 687
Copyright
Copyright © Materials Research Society 1997

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