[G] Aluminum and Its Alloys / Emerging Fields

3:30 PM - 3:45 PM JST(6:30 AM - 6:45 AM UTC)

[34] Deformation Mechanism of Aluminum Alloy Blanks for Magnetic Disks Based on Micro-Residual Stress and Strain Distribution

○Kotaro Kitawaki¹, Kenya Yamashita¹, Kenji Suzuki², Hidenori Toyokawa³ (1. UACJ, 2. Niigata Univ., 3. Konan Univ.)

Keywords:

Aluminum alloy,Residual stress,Layer removal method,Synchrotron radiation double exposure method

Micro-residual stress and strain distributions in aluminum alloy blanks for magnetic disks were investigated. Layer removal and synchrotron radiation double exposure methods were applied to visualize sharp, asymmetric stress gradients, revealing the underlying deformation mechanism.