回归时间对2024铝合金的组织和耐蚀性能的影响

廖鸿宇, 贾咏馨, 苏睿明, 李广龙, 曲迎东, 李荣德

Effect of Retrogression Times on Microstructure and Corrosion Resistance of 2024 Aluminum Alloy

LIAO Hongyu, JIA Yongxin, SU Ruiming, LI Guanglong, QU Yingdong, LI Rongde

表2 不同编号试样的热处理工艺

Table 2 Heat treatments of different sample

Sample Pre-aging Retrogression Re-aging P 190oC×2 h - - RRA1 190oC×2 h 320oC×0.1 h 190oC×8 h RRA2 190oC×2 h 320oC×0.2 h 190oC×8 h RRA3 190oC×2 h 320oC×0.3 h 190oC×8 h RRA4 190oC×2 h 320oC×0.4 h 190oC×8 h RRA5 190oC×2 h 320oC×0.5 h 190oC×8 h