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飞机制造业几年来用超可塑性成型技术发展了一种新的加工工艺。这种新加工工艺利用某些金属合金的特性,在拉力负荷条件下可使金属材料原来的长度伸长到1000％。人们把这称作超可塑性特性。这种金属变形过程可与气熔变形例如玻璃吹制变形相比。合金的超可塑性的变化过程是众所周知的。整个情况可通过三个基本特征显示出来: 1金属材料的颗粒结构必须是很细微和尽可能是二相的。 2.只有在一个限定的温度范围内才能使金属伸长。 3加工成型的速度是很慢的,因此与大批生产相矛盾。 迄今为止,具有超可塑性的特性的合金材料中只有少数几种采用了这种新技术加工
Aircraft manufacturing has developed a new process with superplastic forming technology over the years. The new process, which takes advantage of the properties of certain metal alloys, stretches the original length of the metal material up to 1000% under tensile loading conditions. People call this super plasticity. This metal deformation process can be compared to gas-blown deformations such as glass blown deformations. The process of changing the superplasticity of alloys is well known. The whole situation can be shown by three basic features: 1 The metal structure of the particle structure must be very subtle and, as far as possible, two phases. 2. Elongate metal only within a limited temperature range. 3 processing molding speed is very slow, so contradictory to a large number of production. To date, only a few of the alloys with superplasticity have been machined using this new technology