Forming of Tubular Commercial Purity Aluminum by ECAP
Forming of Tubular Commercial Purity Aluminum by ECAP
复制标题
DOI：
10.1080/10426914.2011.610081
复制
发表时间：
2012-08
影响因子：
4.8
通讯作者：
J. Valder;M. Rijesh;A. Surendranathan
中科院分区：
文献类型：
--
作者：
J. Valder;M. Rijesh;A. Surendranathan
等通道转角挤压（ECAP）是一种在不减小截面积的情况下实现大塑性变形的新工艺。在本研究中，这种技术的适用性进行了调查的管状标本的处理。选择商业纯铝进行研究。使用四条加工路线将管状试样挤压成三道次通过ECAP模具，两个相交通道之间的角度为150°。在压制过程中使用砂作为心轴。对力-行程图进行了分析。并对其力学性能进行了研究。在所有路线中均观察到机械性能的改善。这些研究表明，ECAP是一种很有前途的技术，用于改善管状材料的性能，同时确保形状的保持（与赋予进一步的变形，使用相同的模具的试样的可能性）和低的压制压力。
The equal channel angular pressing (ECAP) process is a promising technique for imparting a large plastic deformation to materials without a resultant decrease in cross-sectional area. In the present study, the suitability of this technique for the processing of tubular specimens has been investigated. Commercially pure aluminum was selected for the study. Tubular specimens were extruded to three passes using four processing routes through an ECAP die with an angle of 150° between the two intersecting channels. Sand was used as a mandrel during the pressing. Analysis of force–stroke diagram was carried out. The mechanical properties were also investigated. Improvement in mechanical properties was observed in all the routes. These investigations demonstrate that ECAP is a promising technique for improving properties of tubular materials while ensuring retention of shape (with the possibility of imparting further deformation to the specimen using the same die) and with low pressing pressures.