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1,李志辉1(
),闫丽珍1,李锡武1,张永安1,熊柏青1,2
),闫丽珍1,李锡武1,张永安1,熊柏青1,2
Effects of Zn Addition on the Natural Ageing Behavior and Bake Hardening Response of a Pre-Aged Al-Mg-Si-Cu Alloy
ZHU Shang1,LI Zhihui1(),YAN Lizhen1,LI Xiwu1,ZHANG Yongan1,XIONG Baiqing1,2
),YAN Lizhen1,LI Xiwu1,ZHANG Yongan1,XIONG Baiqing1,2
图3. 预时效态不含Zn和含Zn合金自然时效不同时间后析出相的3DAP形貌
Fig.3. Morphologies of precipitates observed by 3DAP in the Zn-free and Zn-added alloys during natural ageing after pre-ageingColor online(a) Zn-free alloy after PA+NA 2 d (The analyzed volume is 133 nm×75 nm ×77 nm)(b) Zn-added alloy after PA+NA 2 d (The analyzed volume is 160 nm×57 nm ×59 nm)(c) Zn-free alloy after PA+NA 120 d (The analyzed volume is 260 nm×40 nm ×41 nm)(d) Zn-added alloy after PA+NA 120 d (The analyzed volume is 279 nm×54 nm×55 nm)
