Partitioning of Co during crystallisation of Fe-Co-Nb-B(-Cu) amorphous alloys

Conference item

Partitioning behaviour of alloying elements during the primary crystallisation of both Fe18Co60Nb6B16 and Fe39Co39Nb6B15CU1 alloys has been studied using three-dimensional atom probe (3DAP). Cu rich clusters were found in the Cu-containing alloy, and they provided nucleation sites for the primary alpha-Fe(Co) particles. In the Cu clusters, concentration of both Fe and Co was greatly decreased. In both Cu-containing and Cu-free alloys Nb and B were depleted in the alpha-Fe(Co) particles and enriched in the remaining amorphous phase. However, Co concentration in the alpha-Fe(Co) was the same as the remaining amorphous phase. Based on the 3DAP analysis, the phase volume fraction has been estimated. (C) 2002 Elsevier Science B.V. All rights reserved.

Authors: Zhang, Y; Blazquez, J; Conde, A; Warren, P; Cerezo, A

• Publication status: Published
• Journal: MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
• Volume: 353
• Issue: 1-2
• Pages: 158-163
• Publication date: 2003-07-25
• Event title: 47th International Field Emission Symposium (FIELD EMISSION 2001)
• DOI: 10.1016/S0921-5093(02)00683-4
• ISSN: 0921-5093
• Keywords: soft magnetic; amorphous; microstructure; nanocrystallisation; atom probe