Scholarlink

<p>The article examines the poorly studied effect of reducing the strength properties of artificially aged aluminum sheets made of Al – Mg – Si alloys preliminarily subjected to plastic deformation. Specimens of cold-rolled strip made of alloy 6022 obtained in industrial production were investigated. To assess the magnitude of deformations occurring during sheet stamping of car structural parts, the processes of forming the C- and D-pillars, the inner parts of the hood and the tray were modeled using the PAM-Stamp 2G software package. Quenching, stabilizing heat treatment, deformation, and artificial aging were performed under laboratory conditions. The mechanical properties of the alloy were determined during tensile testing of flat specimens. Transmission electron microscopy was used to investigate the microstructure of the alloy. Thermal hardening was found to slow down after stabilizing heat treatment and deformation. This effect is explained by the fact that the Mg – Si clusters formed in the course of stabilizing heat treatment are destroyed during deformation. As a result, artificial aging in the samples begins at an earlier stage of thermal hardening.</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

Effect of Low Degree Cold Deformation on Hardening During Artificial Aging of Sheets Made from Alloys of the Al – Mg – Si System

  • 期刊论文

  • 发表日期：

    2025年9月1日

查看全文
  • V. V. Yashin,
  • Ye. V. Aryshensky,
  • A. M. Drits,
  • A. F. Grechnikova,
  • Ya. A. Yerisov,
  • D. Yu. Rasposienko

摘要

The article examines the poorly studied effect of reducing the strength properties of artificially aged aluminum sheets made of Al – Mg – Si alloys preliminarily subjected to plastic deformation. Specimens of cold-rolled strip made of alloy 6022 obtained in industrial production were investigated. To assess the magnitude of deformations occurring during sheet stamping of car structural parts, the processes of forming the C- and D-pillars, the inner parts of the hood and the tray were modeled using the PAM-Stamp 2G software package. Quenching, stabilizing heat treatment, deformation, and artificial aging were performed under laboratory conditions. The mechanical properties of the alloy were determined during tensile testing of flat specimens. Transmission electron microscopy was used to investigate the microstructure of the alloy. Thermal hardening was found to slow down after stabilizing heat treatment and deformation. This effect is explained by the fact that the Mg – Si clusters formed in the course of stabilizing heat treatment are destroyed during deformation. As a result, artificial aging in the samples begins at an earlier stage of thermal hardening.