کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
830693 1470358 2012 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Study on microstructure and mechanical properties of Al–Mg–Si–Cu alloy with high manganese content
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Study on microstructure and mechanical properties of Al–Mg–Si–Cu alloy with high manganese content
چکیده انگلیسی

The microstructure and mechanical properties of Al–Mg–Si–Cu alloy with high manganese content were studied in the present work to develop a new alloy. The microstructure features were quantificationally determined by a combination of scanning electron microscope and high resolution transmission electron microscopy. The dominant strengthening precipitates comprising the needle-shaped pre-β″(or β″) and lath-shaped Q′ phases were identified in the T6 temper. With the increase of magnesium content, S phase was promoted to precipitate to give an enhancement in strength. The yield strength of the examined alloys with high manganese content was found to be about 52–65% higher than that of commercial 6061 alloy. It was considered that, in addition to the strengthening precipitates, Mn dispersoids generating the dispersion hardening effect and the homogeneous deformation contributed a lot to the favorable mechanical properties.


► We examine the precipitates by HRTEM in the high manganese Al–Mg–Si–Cu alloy.
► Manganese content determines amount of secondary phases after homogenization.
► Increasing magnesium content promotes to precipitate S phase.
► Yield strength of the new alloy is 52–65% higher than that of commercial 6061 alloy.
► Uniform distribution of Mn dispersoids encourages to enhance mechanical properties.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials & Design - Volume 39, August 2012, Pages 418–424
نویسندگان
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