光加熱発泡を用いて作製した複合化ポーラスアルミニウムの気孔形態の改善

抄録

Aluminum foam composite of aluminum alloy die casting ADC12 core coated by pure aluminum A1050 was fabricated combining foaming of an ADC12 precursor by optical heating and foaming of an A1050 precursor by an electric furnace. In this study, the pore structures of the fabricated aluminum foam composite were examined using X-ray computed tomography (CT) inspection. It was shown that, by controlling optical heating conditions (voltage of halogen lamp and heating time), the aluminum foam composite with good pore structures of ADC12 part and good bondability between A1050 and ADC12 parts could be fabricated. Moreover, drop weight impact tests of the aluminum foam composite was carried out. Based on the test results, it was shown that the plateau stress could be evaluated within ±20% error by using mean compressive stress on a maximum-porosity cross section perpendicular to the loading direction.