Abstract

Newly developed severe plastic deformation (SPD) method TWO-CAP was applied to AA5083 to increase its mechanical properties. The method was developed to obtain the structural beams which have a thin-walled open-cross section area in high strength to weight ratio. During the TWO-CAP process, the annealed U-profile specimens will be pressed along the specifically designed die channel with the help of the hydraulic press machine. After the expansion and narrowing processes, the specimen leaves the die with initial dimensions at the end of each pass. Therefore, the material gains strength, hardness, and toughness while the microstructure of the material was improved as a result of the SPD. In order to determine the effect of the TWO-CAP on the mechanical properties of the material, the hardness and tension tests were carried out on the all passed specimens. Also, the characteristic investigations were performed on the specimens by using optical microscopy, SEM–EDS, and XRD analyses.

Graphic Abstract

摘要

新开发的严重塑性变形（SPD）方法TWO-CAP被应用于AA5083，以提高其机械性能。开发该方法以获得具有高强度重量比的薄壁开口横截面面积的结构梁。在两次加帽过程中，将在液压机的帮助下将退火过的U型试样沿专门设计的模具通道进行压制。经过膨胀和收缩过程后，样品在每次通过结束时以初始尺寸离开模具。因此，由于SPD，材料获得了强度，硬度和韧性，同时改善了材料的微观结构。为了确定TWO-CAP对材料的机械性能的影响，对所有通过的试样进行硬度和拉伸试验。另外，通过光学显微镜，SEM-EDS和XRD分析对标本进行了特性研究。

图形摘要