Deformation behavior of an electrodeposited nano-Ni/amorphous Fe78Si9B13 laminated composite sheet
School of Materials Science and Engineering, Harbin Institute of Technology, 150001
Harbin, PR China
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Accepted: 5 March 2015
A nano-Ni/amorphous Fe78Si9B13 composite sheet was prepared in the form of three-ply (Ni-Fe78Si9B13-Ni) laminated structure by an electrodeposition method. The average grain size of Ni layers is about 50 nm. The interface of laminated composite was investigated with SEM equipped with energy dispersive scanning (EDS) and line analysis technique. The laminated composite has a good interfacial bonding between amorphous layer and nano-Ni layers due to the mutual diffusion of atoms in Fe78Si9B13 and Ni layers during the process of electrodeposition. A maximum elongation of 115.5% was obtained when the volume fraction of nano-Ni layers (VNi) was 0.77, which is greatly higher than that of monolithic amorphous Fe78Si9B13 ribbon (36.3%) tested under the same conditions. Bulging tests were carried out to evaluate plastic forming properties of the Fe78Si9B13/Ni laminated composite. Under the condition of 450 °C, 4.0 MPa and 30 min, a good bulging part with the relative bulging height (RBH) of 0.4 was obtained.
Key words: Electrodeposition / Nano-material / Amorphous / Laminated composite
© K. Zhang et al., Published by EDP Sciences, 2015
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