抄録
The biggest increase in materials used for light-weighting cars and trucks are neither aluminium, magnesium nor some other alternative metals. Instead, it is the high strength steel sheets, such as Extra-low carbon steels, that have shown the most growth in the light-vehicle market. The continuing emphasis on vehicle mass reduction has driven researchers to investigate the use of thin, high-strength steels in automobiles. Reducing weight by using thinner high strength steel sheets allows car companies to meet reduced fuel requirements without compromising the size and safety of cars as well as the buyers' affordability. Extra-low carbons steels, commonly known as Interstitial Free steels (IF) have been widely used for automobile plates. IF-steels have also been widely used in many kinds of products by press deformation particularly of stamped components in automobile application because of their excellent deep-draw ability and low deformation resistance.
