摘要
The fuel consumption of automobiles has a close relationship with their weight, and due to short supply and high prices of energy sources, numerous automakers are trying every means to make the automobile ＂slim＂ （or less heavy）. According to available data, every 100-kg reduction in automobile weight will result in a 0.3-liter gasoline saving for every hundred kilometers of driving. Therefore, automobile parts with light weight, thin wall, excellent dimensional accuracy and high strength and toughness become the development trend. Aluminum-based and magnesium-based alloys are seen as ideal materials for automobile parts because of their advantages of light weight, corrosion resistance and shape-forming ability. At present,
The fuel consumption of automobiles has a closerelationship with their weight, and due to short supply
