Zn添加对预时效态Al-Mg-Si-Cu合金自然时效和烘烤硬化性的影响
朱上,李志辉,闫丽珍,李锡武,张永安,熊柏青

Effects of Zn Addition on the Natural Ageing Behavior and Bake Hardening Response of a Pre-Aged Al-Mg-Si-Cu Alloy
Shang ZHU,Zhihui LI,Lizhen YAN,Xiwu LI,Yongan ZHANG,Baiqing XIONG
表4 预时效态不含Zn和含Zn合金自然时效不同时间对应的烘烤态屈服强度计算值
Table 4 Calculated yield strengths of the pre-aged Zn-free and Zn-added alloys during BH treatment after NA (Different types of precipitates are distinguished in Figs.5e~h)
AlloyAgeing treatmentPrecipitate typeYield strength / MPa
Zn-freePA+NA 2 d+BHCluser28.6
GP zone15.9
PA+NA 120 d+BHCluser34.3
GP zone7.9
Zn-addedPA+NA 2 d+BHCluster32.1
GP zone21.8
β41.5
PA+NA 120 d+BHCluster46.4
GP zone15.7
β19.5