کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7176775 | 1466736 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of microstructural characteristics on high cycle fatigue properties of laser-arc hybrid welded AA6082 aluminum alloy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of microstructural characteristics on high cycle fatigue properties of laser-arc hybrid welded AA6082 aluminum alloy Effect of microstructural characteristics on high cycle fatigue properties of laser-arc hybrid welded AA6082 aluminum alloy](/preview/png/7176775.png)
چکیده انگلیسی
High cycle fatigue performance and the microstructures of laser-arc hybrid welded 8Â mm-thick heavy plate of AA6082 aluminum alloy were studied firstly. The microstructures and the fatigue fracture surfaces were characterized by scanning electron microscope, electron back-scattered diffraction and transmission electron microscopy. The effects of the microstructures on different fatigue process were discussed theoretically. The fatigue limit at 107 cycles was about 120Â MPa, far superior to the corresponding values for pure laser or pure arc welds. The fatigue process consisted of crack initiation and three crack propagation stages. The hybrid welding produced the welds with low percent porosity, grain refinement, and increased static strength. It improved the fatigue life during crack initiation, and then prolonged the total fatigue life. The theoretical analysis suggested that the microstructures played a key role in improving the fatigue properties of hybrid weld.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Materials Processing Technology - Volume 231, May 2016, Pages 479-487
Journal: Journal of Materials Processing Technology - Volume 231, May 2016, Pages 479-487
نویسندگان
Chen Zhang, Ming Gao, Xiaoyan Zeng,