کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1636385 1516956 2015 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fracture behavior of double-pass TIG welded 2219-T8 aluminum alloy joints under transverse tensile test
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Fracture behavior of double-pass TIG welded 2219-T8 aluminum alloy joints under transverse tensile test
چکیده انگلیسی
2219-T8 aluminum alloys were butt welded by the double-pass tungsten inert gas (TIG) arc welding process. The transverse tensile test of the joint showed that the fracture mainly occurred in the partially melted zone (PMZ). Effects of the PMZ on the fracture behavior were systematically studied. Continuous intergranular eutectics were observed in the PMZ close to the fusion line. Away from the fusion line, the intergranular eutectics in the PMZ became discontinuous. The fracture morphology and the microhardness distribution of the joint showed that the PMZ was gradient material with different mechanical properties, which strongly affected the fracture process. It was observed that the crack initiated in the PMZ near the front weld toe, and propagated in the PMZ away from the fusion line. Then, the crack tip was blunt when it propagated into the PMZ with higher plasticity. Finally, the rest part of the joint was shear fractured.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Transactions of Nonferrous Metals Society of China - Volume 25, Issue 6, June 2015, Pages 1794-1803
نویسندگان
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