Phase Separation and Crystallization Induced by Electron Irradiation in Nanoscale Fe56.5Mn11Cr8.5Ni4Si10C10 Metallic Glass
来源期刊：Acta Metallurgica Sinica2015年第11期
论文作者：Xiao-Yang Chen Shu-Guang Zhang Ming-Xu Xia Jian-Guo Li
文章页码：1332 - 1335
摘 要：A nanoscale Fe56.5Mn11Cr8.5Ni4Si10C10 metallic glass was irradiated by electron beam in a 200 kV transmission electron microscope.Structure evolution in the metallic glass was investigated in situ during continuous irradiation,where phase separation was observed after irradiation for 5 min and crystallization was observed after 33.5 min.Based on the analysis of irradiation effect,atomic displacement is believed to be the main reason for the structure rearrangement.Accumulation of atomic displacement increases the energy of the sample and promotes atomic diffusion during transformation.On the other hand,the large specific surface area of the sample also contributes to increasing free energy and atomic diffusion.
Xiao-Yang Chen，Shu-Guang Zhang，Ming-Xu Xia，Jian-Guo Li
School of Materials Science and Engineering,Shanghai Jiao Tong University
摘 要：A nanoscale Fe56.5Mn11Cr8.5Ni4Si10C10 metallic glass was irradiated by electron beam in a 200 kV transmission electron microscope.Structure evolution in the metallic glass was investigated in situ during continuous irradiation,where phase separation was observed after irradiation for 5 min and crystallization was observed after 33.5 min.Based on the analysis of irradiation effect,atomic displacement is believed to be the main reason for the structure rearrangement.Accumulation of atomic displacement increases the energy of the sample and promotes atomic diffusion during transformation.On the other hand,the large specific surface area of the sample also contributes to increasing free energy and atomic diffusion.
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