Halo Evolution of Hypereutectic Al-17.5Si Alloy Treated with High-Current Pulsed Electron Beam

Figure 2

SEM micrographs of halo of HCPEB-treated Al-17.5Si alloy under different pulse numbers.

(a) 5 pulses at low magnification

(b) 5 pulses at high magnification

(c) 15 pulses at high magnification

(d) 25 pulses at high magnification