ZOU Jianxin QIN Ying WU Aimin HAO Shengzhi WANG Xiaogang DONG Chuang. Thermal-mechanical simulation of high-current pulsed electron beam surface modification process of pure aluminum[J]. Nuclear techniques, 2004, (7): 519-524.
ZOU Jianxin QIN Ying WU Aimin HAO Shengzhi WANG Xiaogang DONG Chuang. Thermal-mechanical simulation of high-current pulsed electron beam surface modification process of pure aluminum[J]. Nuclear techniques, 2004, (7): 519-524.DOI:
A mathematical physics model is established to describe the surface modification process of High Current Pulsed Electron Beams (HCPEB) of pure aluminum alloy. Computer simulation is used to reveal the phenomena of fast heating and cooling
melting
solidification
evaporation
and thermal stress wave associated with the HCPEB bombardment. The calculated melting depth is about 1-10μm
which is close to the experimental results. The evaporated layer is at nanometer level
which can be omitted in the calculation of temperature field. The thermal stress wave
though as weak as about 0.1 MPa in peak amplitude (proportional to pulsed energy density)
has strong impacts on material’s structure and properties.