LAUSR

In order to find out the impact of aluminum alloy hub replaced by the magnesium alloy hub on environment, the resource consumption, energy consumption and pollutant emission during hub production and their service life of the two types of hubs are investigated based on the life cycle assessment (LCA) theory. The results indicate that the adverse impact on environment can be effectively reduced by the application of magnesium alloy hubs. Compared with aluminum alloy hubs, the global warming potential (GWP) and human toxicity potential (HTP) are reduced by 39.6% and 24.0%, respectively. CO2 is the main pollutant in the life cycles of the two kinds of hubs, which is generated throughout the whole life cycle including the fabrication process and the service life, while the pollutants of particles mainly come from the fabrication stage. Compared with the aluminum alloy hubs, the green effect brought by magnesium alloy hubs is mainly due to the reduction of fuel consumption caused by weight loss.摘要为了探明镁合金汽车轮毂替代铝合金汽车轮毂对环境的影响,本文基于生命周期评价理论研究 了2 种轮毂生产及使用过程中的资源、能源消耗及污染物排放情况。结果表明:采用镁合金轮毂替代 铝合金轮毂,可有效降低对环境的不利影响,与铝合金轮毂相比,镁合金轮毂在整个生命周期中可使 温室效应降低39.6%,对人体健康的损害程度降低24.0%;CO2是两种轮毂生命周期中的主要污染物, 且贯穿于轮毂的生产及使用过程,颗粒物则主要产生于轮毂的制备阶段;与铝合金轮毂相比,镁合金 轮毂的绿色效应主要归功于减重所带来的油耗降低。