Volume 34, Issue 1 (Journal of Advanced Materials-Spring 2015)                   2015, 34(1): 45-53 | Back to browse issues page

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Ahmadi S, Arabi Jeshvaghani R, Shahverdi H. Investigation of Crystallization Kinetics of Fe36Cr12Mo10 and α-Fe Phases in Devitrification of Fe51Cr18Mo7B16C4Nb4 Amorphous Alloy. Journal of Advanced Materials in Engineering (Esteghlal) 2015; 34 (1) :45-53
URL: http://jame.iut.ac.ir/article-1-640-en.html
Investigation of Crystallization Kinetics of Fe36Cr12Mo10 and α-Fe Phases in Devitrification of Fe51Cr18Mo7B16C4Nb4 Amorphous Alloy
S. Ahmadi , R. Arabi Jeshvaghani , H.R. Shahverdi *
, : shahverdi@modares.ac.ir
Abstract:   (7241 Views)

In this research, crystallization of Fe36Cr12Mo10 and α-Fe phases in devitrification of Fe51Cr18Mo7B16C4Nb4 amorphous alloy was studied using X-ray diffraction and transmission electron microscopy. For evaluation of crystallization kinetics, differential scanning calorimetric tests were carried out at different heating rates. Results showed that two-step crystallization led to the formation of Fe36Cr12Mo10 and α-Fe phases in the structure of alloy. Activation energy of crystallization of Fe36Cr12Mo10 and α-Fe phases measured according to Kissinger-Starink model were 747 and 880 kJ/mol, respectively. Results growth mechanism along with the decreasing nucleation rate in crystallization of Fe36Cr12Mo10 and α-Fe phases.

Keywords: Crystallization, Devitrification, Activation energy, Growth mechanism
Full-Text [PDF 1112 kb]   (2041 Downloads)    
Type of Study: Research | Subject: Surface engineering and coatings
Received: 2015/06/28 | Accepted: 2015/06/28 | Published: 2015/06/28
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