最近几年,国外在设备结构上已广泛使用微型部件,例如,薄壁管、薄壁铸件、隔膜、薄膜和其他弹性元件等。在绝大多数情况下,这些部件要经受短时和长时间载荷,所以要产生大的弹性变形和塑性变形,但是有关薄壁型材的机械性能方面的资料是非常缺少的。薄板(箔材)的特点是宽对厚的比例大,表面对体积的比值和冷加工度都大。箔材的机械性能与同样材料的厚壁型材的机械性能差别 In recent years, foreign countries have made extensive use of micro-components on the structure of equipment such as thin-walled tubes, thin-walled castings, diaphragms, films and other flexible elements. In the vast majority of cases, these parts are subject to short-term and long-term loads, so large elastic and plastic deformations are to be produced, but information on the mechanical properties of thin-walled sections is very scarce. Sheet (foil) is characterized by a large ratio of width to thickness, surface to volume ratio and cold workability are large. The mechanical properties of foils differ from the mechanical properties of thick-walled sections of the same material