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人们一般认为金属具有又坚又硬的性质,但是在某些条件下,它们具有绝然不同的另外一种性质——塑性。这种性质为金属获得广泛应用提供了重要条件。 1.塑性的意义塑性是什么?它是与弹性相应的一个概念。物理学告诉我们,物体在外力作用下要产生变形,如果除去外力,物体变形就会消失,恢复原状。这种性质称做弹性。在弹性限度以内,物体的变形与外力成正比。外力的作用超过物体材料的弹性限
It is generally accepted that metals have a tough and hard nature, but under certain conditions they have a totally different property, ductility. This property has provided important conditions for the wide use of metals. 1. Plasticity What is plasticity? It is a concept corresponding to flexibility. Physics tells us that the object under the action of external force to produce deformation, if the removal of external force, the object deformation will disappear, restitution. This property is called elasticity. Within the elastic limit, the deformation of the object is proportional to the external force. The force of the external force exceeds the elastic limit of the material of the object