کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10656386 | 1005482 | 2016 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The influence of Cu addition and pre-straining on the natural aging and bake hardening response of Al-Mg-Si alloys
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The influence of Cu addition and pre-straining on the natural aging and bake hardening response of Al-Mg-Si alloys The influence of Cu addition and pre-straining on the natural aging and bake hardening response of Al-Mg-Si alloys](/preview/png/10656386.png)
چکیده انگلیسی
The effect of pre-straining on the natural aging and bake hardening of Al-Mg-Si alloys with different additions of Cu were investigated by Vickers microhardness measurements, differential scanning calorimetry (DSC) analysis and transmission electron microscopy (TEM) characterization. It is revealed that introducing pre-straining can suppress the natural aging and increase the bake hardening response (BHR) for both low and high Cu addition alloys. A pre-strain of 2% is found to be the optimum process. Addition of Cu can increase the effect of pre-straining in suppressing the natural aging and improving the BHR after paint baking. The slow diffusion rate of Cu atoms in the Al matrix is most probably the main reason for the significant suppression of natural aging in the high content Cu alloy after pre-straining. During paint baking, the dislocations introduced promote the preferential precipitation of the Qâ² phase and produce a disordered structure within the precipitates. Thus designing new pre-straining processes should fully consider the influences of Cu addition to the alloys.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 688, Part A, 15 December 2016, Pages 362-367
Journal: Journal of Alloys and Compounds - Volume 688, Part A, 15 December 2016, Pages 362-367
نویسندگان
Lipeng Ding, Zhihong Jia, Yingying Liu, Yaoyao Weng, Qing Liu,