Effect of the Diffusion of Vacancies on the Growth Kinetics of Crystals During the Recrystallization and Decomposition of Supersaturated Solid Solutions

1966 ◽  
pp. 119-126
Author(s):  
L. N. Aleksandrov
2006 ◽  
Vol 15-17 ◽  
pp. 678-683 ◽  
Author(s):  
Felipe Hernandez-Santiago ◽  
I. Espinoza-Ramirez ◽  
Victor M. Lopez-Hirata ◽  
Maribel L. Saucedo-Muñoz ◽  
Lucia Díaz-Barriga Arceo ◽  
...  

Supersaturated solid solutions of Cu-44.5at.%Ni-22.5at.%Fe and Cu-37at.%Ni-6at.%Cr alloy were produced by ball milling of a pure chemical elemental mixture for 1080 ks. Two fcc supersaturated solid solutions with a grain size of about 20 and 50 nm, respectively, were obtained after milling. These alloys were subsequently aged at temperatures between 800 and 1003 K for different times. The aging promoted the phase decomposition of the supersaturated solid solution into a mixture of Cu-rich and Ni- phases in both the aged MA alloy powders. The growth kinetics of the modulation wavelength was determined from the X-ray diffraction results and followed the Lifshitz-Slyozov- Wagner theory for a diffusion-controlled coarsening in the mechanically-alloyed Cu-Ni-Fe alloy after aging. However, the sidebands intensity seems to be very low and overlapped with the peaks corresponding to the Cu-rich phase in the aged mechanically-alloyed Cu-Ni-Cr alloy. The growth kinetics of composition modulation wavelength for the aged MA Cu-Ni-Fe alloy was faster at 803 and 898 K than that for the same alloy composition obtained by a conventional processing and then aged at the same temperatures.


1993 ◽  
Vol 140 (1) ◽  
pp. 127-133 ◽  
Author(s):  
V. V. Brazhkin ◽  
A. G. Lyapin ◽  
S. V. Popova ◽  
R. N. Voloshin

1985 ◽  
Vol 27 (9) ◽  
pp. 698-701 ◽  
Author(s):  
G. M. Fedorov ◽  
V. N. Fedorov ◽  
M. G. Khan ◽  
A. T. Manuilov

1992 ◽  
Vol 96 (24) ◽  
pp. 10008-10019 ◽  
Author(s):  
R. G. Snyder ◽  
M. C. Goh ◽  
V. J. P. Srivatsavoy ◽  
H. L. Strauss ◽  
D. L. Dorset

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