1.
School of Mechanical Engineering, University of Science and Technology Beijing, Beijing, China
2.
Shunde Innovation School, University of Science and Technology Beijing, Foshan, China
Email: songhechuan@ustb.edu.cn (H.C.S.); zhouxiaomin@ustb.edu.cn (X.M.Z.); Zhang_qd@me.ustb.edu.cn (Q.D.Z.); zhangby@ustb.edu.cn (B.Y.Z.)
*Corresponding author
Manuscript received June 14, 2024; revised July 15, 2024; accepted August 27, 2024; published September 19, 2024.
Abstract—Quenching treatment is usually used to improve the mechanical properties of the age-strengthening aluminum alloy. However, high residual stress is introduced during the quenching process, which seriously affects the subsequent manufacturing and service performance. Therefore, the elimination and homogenization of residual stress are particularly important. Based on this, a new and effective method, Cold Ring Rolling (CRR) stress relief, was proposed in this paper. Taking the 2219 Al alloy ring widely used in the aerospace field as an example, the evolution and distribution of residual stress during CRR were explored. The potential danger of the test ring deformation before and after CRR was analyzed with the strain energy density theory. Based on the experimental results, the internal mechanism of residual stress relief by CRR was revealed. The results show that the circumferential and axial residual stress relief rates of the test ring after CRR are 32.35% and 37.86%, respectively, and the degree of residual stress non-uniformity is greatly reduced. At the same time, the strain energy density of the test ring greatly reduces after CRR, and the trend of adverse deformation is effectively reduced. The relief of internal stress is achieved through the initial stage of plastic deformation. Meanwhile, the disordered high-energy defects tend towards a newly ordered low-energy equilibrium. This study can provide theoretical and technical support for the shape control of high-performance ring components.
Keywords—aluminum alloys, cold ring rolling, residual stresses, residual strain energy, evolution mechanisms
Cite: Hechuan Song, Xiaomin Zhou, Qingdong Zhang, and Boyang Zhang, "Evolution Law and Mechanism of Residual Stress in Ring Components by Cold Ring Rolling Method,"
International Journal of Engineering and Technology, vol. 16, no. 3, pp. 164-168, 2024.
Copyright © 2024 by the authors. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
