کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5456379 1514661 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experimental research on creep aging behavior of Al-Cu-Mg alloy with tensile and compressive stresses
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Experimental research on creep aging behavior of Al-Cu-Mg alloy with tensile and compressive stresses
چکیده انگلیسی
Complex aircraft panels are generally manufactured by creep age forming process (CAF). In CAF, an aluminum panel is mainly subjected to bending, in which one side of the component is in tension and the other side is in compression. The tension and compression creep aging behaviors of Al-Cu-Mg alloy are investigated through creep tests, hardness tests and transmission electron microscope observations. It is found that the creep strains under compressive stresses are smaller than those under tensile stresses. When comparing to the microstructure of creep-aged alloy, the compressive stress can promote the formation of S phase in aluminum matrix and inhibit the generation of grain boundary precipitates, which leads to the improvement of hardness of the compression creep aged alloy. A unified creep constitutive model to describe the creep aging behavior of 2524 aluminum alloy with different stress roles was established based on the Hyperbolic Sine method, and a good agreement between the experimental results and model predictions is obtained.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 682, 13 January 2017, Pages 54-62
نویسندگان
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