کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1577502 1514804 2012 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microstructures and mechanical properties of age-formed 7050 aluminum alloy
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Microstructures and mechanical properties of age-formed 7050 aluminum alloy
چکیده انگلیسی

The effects of age-forming on microstructures and mechanical properties of 7050 Al alloy were investigated in this work. The alloy was subjected to age-forming as well as stress-free ageing at 160 °C for 6, 12, 18 and 24 h, and its microstructures were characterized by electron backscatter diffraction (EBSD) and transmission electron microscopy (TEM). It was shown that creep might lead to grain elongation during age-forming, and the applied stress induces the coarsening of precipitates in 7050 Al alloy. The texture in the alloy was also influenced by age-forming. Consequently, the differences in microstructures result in differences in mechanical properties of age-forming versus traditional stress-free ageing. The ultimate tensile strength of age-formed samples were slightly lower than that of stress-free aged samples, while the yield strength of age-formed samples were apparently lower than that of stress-free aged samples. Specifically, the elongation of samples age-formed displays apparently decrease.


► Age-forming leads to the grain elongation in 7050 alloy.
► Age-forming varies the texture components in 7050 alloy.
► Age-forming promotes precipitates growth and PFZ enlargement in 7050 alloy.
► Age-forming induces to descend apparently elongation in 7050 alloy.
► The effect of age-forming on microstructure and properties is discussed in-depth.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 539, 30 March 2012, Pages 115–123
نویسندگان
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