Unveiling Thermal and Athermal Effects in Strain Hardening Removal of A6061 Aluminum Alloy

• DOI: 10.1007/s12540-024-01778-7
• Publication Date: 2024-08-14T09:02:16Z
• Authors: Xiaoming Yu; Shaojie Gu; Guodong Wang; Yasuhiro Kimura; Yang Ju; Yuhki Toku
• Keywords: Hardening (computing); Strain hardening exponent; Strain (injury)

Abstract This study explored the application of a high-density pulsed electric current (HDPEC) to mitigate strain hardening in cold-rolled A6061 aluminum alloy while examining simultaneous HDPEC with furnace heating reveal contributions thermal and athermal effects. The results showed that significant strain-hardening relief was achieved through treatment, particularly at 300 A/mm² for 260 ms, resulting 23% reduction strength an 86% increase ductility. Microstructural analysis revealed shift fine equiaxed grains reduced dislocation density, which primarily attributed annealing exhibits superior efficiency compared conventional offering cost time advantages. In addition, this validated synergistic impact heating, supplementing energy requirements, facilitating practical implementation. These findings suggest method combined are promising alternatives alleviation manufacturing, supporting development eco-friendly efficient process. Graphical