Interfacial energy of copper clusters in Fe-Si-B-Nb-Cu alloys

SCRIPTA MATERIALIA

卷:162

Article

Jha, Rajesh¹  Diercks, David R.²  Chakraborti, Nirupam³  Stebner, Aaron P.¹  Ciobanu, Cristian V.¹ 

[1] Colorado Sch Mines, Dept Mech Engn, Golden, CO 80401 USA

[2] Colorado Sch Mines, Dept Met & Mat Engn, Golden, CO 80401 USA

[3] Indian Inst Technol Kharagpur, Dept Met & Mat Engn, Kharagpur, W Bengal, India

关键词: Interfacial energy;    FINEMET;    Atom probe tomography;    Precipitation kinetics;    Thermocalc;   

DOI  :  10.1016/j.scriptamat.2018.11.039

来源: Elsevier

【 摘 要 】

Using a combination of numerical simulations and atom-probe tomography experiments, we determine the interfacial energy of Cu nanocrystals precipitated within the amorphous matrix of FINEMET (molar composition Fe72.89Si16.21B6.90Nb3Cu1). Specifically, we use the Langer-Schwartz model implemented in the software Thermocalc to carry out parametric simulations of growth and coarsening of Cu clusters for different interface energies. We have carried out atom-probe tomography (APT) experiments to determine the interface energy as the value for which the simulated particle size distribution best matches the experimental data. This combination of AFT and precipitation modeling can be applied to other nanocrystals precipitated within amorphous matrices. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

Free