The effect of pore formation on the reflectance of aluminum alloy 1421 during laser pulse action

P. Yu. Kikin, V. N. Pereverzentsev, E. E. Rusin

Mechanical Engineering Research Institute of RAS, Nizhny Novgorod

Abstract: It is shown that the appearance of micropores leads to an increase in the reflectance of aluminum-based alloy 1421 irradiated by laser pulses. The waveform of a reflected signal bears information on the onset and duration of the pore-formation process in the near-surface material layer during the action of a laser pulse.

Received: 18.09.2013

 English version: Technical Physics Letters, 2014, 40:5, 435–437

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