论文部分内容阅读
用不同的方法可以制得具有较高性能的新材料:制订新成分的合金,对氧化金属材料和高强合金颗粒进行加工、用高强纤维强化金属等。用合金方法提高铝合金性能的可能性已经很小。用粉末冶金方法生产的具有高温良好性能的材料,就正常条件下的性能来说,要劣于许多传统铝合金。用高强纤维加筋强化铝和铝合金为铝合金的强化和性能的稳定开辟了新的可能性。与传统的结构合金比较,用纤维强化制得的复合材料可能增加的比重,由于机械性能的显著提高而得到补偿。材料的强化情况可在拉伸时以承受所加负荷的主要部分的强化纤维中产生的应力来确定。用纤维强化时,其长度可大于或小于基体金属颗粒的直径,但条件是基体金属一定要比
Different methods can be used to produce new materials with higher performance: the development of new alloy components, the oxidation of metal materials and high-strength alloy particles for processing, with high-strength fiber-reinforced metal. The possibility of using alloys to improve the properties of aluminum alloys is already small. Materials produced by powder metallurgy with good high temperature properties are inferior to many conventional aluminum alloys for performance under normal conditions. Reinforced with high-strength fiber reinforced aluminum and aluminum alloy for the strengthening of aluminum and performance stability has opened up new possibilities. Compared to conventional structural alloys, the possible increased specific gravity of composites made with fiber reinforcement is compensated for by significant improvements in mechanical properties. The strengthening of the material can be determined by the stresses that occur in the reinforcing fibers that bear the major part of the applied load during stretching. With fiber reinforcement, its length may be greater than or less than the diameter of the base metal particles, provided that the base metal must be