کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1635826 1516946 2016 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of pin profile and process parameters on microstructure and mechanical properties of friction stir welded Al-Cu joints
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Effect of pin profile and process parameters on microstructure and mechanical properties of friction stir welded Al-Cu joints
چکیده انگلیسی
In friction stir welding (FSW), pin profile has more influence on material flow especially in welding of dissimilar materials with different yield strengths. In the dissimilar welding of aluminium and copper, the material flow behaviour is complex to understand and thus a study is needed to reveal the mechanism of flow behaviour and the resultant mechanical properties. Three pin profiles, whorl pin profile (WPP), plain taper pin profile (PTP) and taper treaded pin profile (TTP) were chosen. The effects of pin profile on the microstructure, microhardness and tensile properties were studied. Optical microscope, scanning electron microscope, X-ray diffraction and EDS analysis were used to characterize the microstructural features. Among the three pin profiles, PTP profile results in defect-free stir zone and maximum joint properties of yield strength of 101 MPa, tensile strength of 116 MPa and joint efficiency of 68% compared with the other pin profiles. However, the microhardness plots are more or less identical for all the pin profiles but follows fluctuating trend. This is attributed to the heterogeneous distribution of hard Cu particle. The superior joint properties are mainly attributed to the defect-free stir zone formation and dispersion strengthening.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Transactions of Nonferrous Metals Society of China - Volume 26, Issue 4, April 2016, Pages 984-993
نویسندگان
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