Author/Authors :
Guan، نويسنده , , Q.F. and Zou، نويسنده , , H. and Zou، نويسنده , , G.T. and Wu، نويسنده , , A.M. and Hao، نويسنده , , S.Z. and Zou، نويسنده , , J.X. and Qin، نويسنده , , Y. and Dong، نويسنده , , C. and Zhang، نويسنده , , Q.Y.، نويسنده ,
Abstract :
The structure and phase transformations in the near-surface layers of a low carbon steel (0.2 wt.% C) subjected to a high-current pulsed electron beam (HCPEB) treatments have been investigated by using electron microscopy and X-ray diffraction (XRD). The high-current electron beam is characterized by low energy (20–30 keV), short pulse (3.5 μs), and high energy density (1.5–4 J cm−2). A nanostructure consisting of cementite and C-supersaturated austenite is formed in the near-surface region after multiple bombardments. More bombardments even lead to vetrification.
Keywords :
Pulsed electron beam , Amorphous state , Surface nanostructure , Low carbon steel
