Scholarlink

<p>The poor room temperature forming properties are the main challenge for 7075 aluminum alloy to be extensively used in the lightweight process of automobiles. The mechanical characteristics, microstructure, and corrosion resistance after T6 aging of 7075 aluminum alloy with different tensile degrees and different pre-aging treatment schemes were analyzed. The results show that the tensile deformation during room temperature forming of 7075 aluminum alloy will reduce the strength and hardness after aging treatment. The tensile strength and hardness are reduced by 12.6 and 6.7% by 15% tensile deformation. Pre-aging treatment can improve the strength after aging. After 1.5&#xa0;h of treatment, the maximum tensile strength reached 584.075&#xa0;MPa. Electrochemical tests revealed that a pre-aging time of 1.5&#xa0;h yielded optimal performance, with an open-circuit potential of 773&#xa0;mV and a corrosion current density as low as 2.263 × 10<sup>−6</sup> A/cm<sup>2</sup>, demonstrating exceptional corrosion resistance.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Synergistic Effect of Deformation-Aging Coupling on Properties and Microstructure of 7075 Aluminum Alloy

  • 期刊论文

  • 发表日期：

    2026年1月29日

查看全文
  • Shuisheng Chen,
  • Nannan Zhang,
  • Yang Zhou,
  • Qian Chen,
  • Wentao Wang

摘要

The poor room temperature forming properties are the main challenge for 7075 aluminum alloy to be extensively used in the lightweight process of automobiles. The mechanical characteristics, microstructure, and corrosion resistance after T6 aging of 7075 aluminum alloy with different tensile degrees and different pre-aging treatment schemes were analyzed. The results show that the tensile deformation during room temperature forming of 7075 aluminum alloy will reduce the strength and hardness after aging treatment. The tensile strength and hardness are reduced by 12.6 and 6.7% by 15% tensile deformation. Pre-aging treatment can improve the strength after aging. After 1.5 h of treatment, the maximum tensile strength reached 584.075 MPa. Electrochemical tests revealed that a pre-aging time of 1.5 h yielded optimal performance, with an open-circuit potential of 773 mV and a corrosion current density as low as 2.263 × 10−6 A/cm2, demonstrating exceptional corrosion resistance.