The life cycle assessment of metal materials used for automobile body materials and castings

摘要

In this paper, the life cycle assessment models for automobile lightweight materials including high-strength steel, aluminum alloy and m agnesium alloy are developed by Gabi software. The ev aluation models and ev aluation indicators such as a cidification effects, r ich eutrophication effect, ozone layer depletion effects, global warming, resource consumption and for mation of ozone poten tial were taken into account. It is shown that the effects of acidification and ozon e for mation are mainly derived from the run phase of high-st rength steel and they have strong environmental impact load. While considering the entire life cycle with materials prod uction phase and resource consu mption, the alu minum and magnesium alloy appe ar t o have large r environmental load th an hig h-strength steel. Base d on the evaluation, some optimization tips are proposed.