论文部分内容阅读
当今世界对高强轻质合金的需求日益增加，轻质高强度金属材料主要有铝基、钛基和镁基三大系列。铝基合金非晶化可使抗拉强度提高到１２５０ＭＰａ通过纳米晶化还可得到在大约１．０ｓ－１的大应变速率下高达７００％的超塑性。镁基合金之中的许多合金系可利用熔体急冷法获得非
In today’s world, the demand for high-strength and light-weight alloys is increasing. Light-weight and high-strength metal materials mainly include aluminum, titanium and magnesium-based three series. Amorphous aluminum alloys can increase the tensile strength to 1250 MPa by nanocrystallization can also be obtained at a large strain rate of about 1.0s-1 up to 700% of the superplasticity. Many of the magnesium based alloys can be obtained by melt quenching