时效强化对连续成型Al-Zr-Be合金导体组织性能的影响

为制备高导电率电工圆铝杆,借助材料电子拉伸试验机、双臂直流电桥、光学显微镜、恒温干燥箱、拉丝机,分析研究时效强化及冷拔加工对Al-Zr-Be合金导体组织与性能的影响.结果表明,时效强化及冷拔加工等强化方式可有效地改善合金组织,大幅度提高合金圆铝杆的抗拉强度,同时对等效导电率也具有一定的影响.运用连续铸挤工艺制备的Al-Zr-Be合金圆铝杆,经时效强化及冷拔加工后,直径3.5mm合金圆铝杆抗拉强度为140.24~148.62MPa,伸长率为2.6%~3.1%,等效导电率为61.42%~61.65%IACS.

Influence of Aging Strengthening to Al-Zr-Be Alloy Conductor Prepared Microstructures and Properties of by Continuous Forming

In order to produce electric aluminum rods with high electric conductivity, by means of electronic tensile machine, double arm direct current, optical microscope, thermostatic drier box, wire drawing machine, the influence of ageing strengthening and cold-drawing process to microstructure and properties of Al-Zr-Be alloy are analyzed and researched. The result shows that ageing strengthening and cold-drawing process can effectively improve the organization of the alloy and the tensile strength of aluminum alloy round rod, and has a certain impact on the equivalent conductivity. Prepared by CASTEX process, the tensile strength, elongation and the equivalent conductivity of the 3. 5 mm diameter A1-Zr-Be round aluminum alloy rod are 140. 24-148. 62 MPa, 2.6%-3.1% and 61.42%-61.65 % IACS, after ageing strengthening and cold drawing processing.