کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1637957 1516981 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Low cycle fatigue behavior of extruded AZ31B magnesium alloy
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Low cycle fatigue behavior of extruded AZ31B magnesium alloy
چکیده انگلیسی

The strain-controlled fatigue behavior of an extruded AZ31B magnesium alloy was investigated under symmetric loading at different total strain amplitudes. It is found that except for the low strain magnitude of 0.5%, the alloy exhibits obviously cyclic strain-hardening characteristics during fatigue at strain magnitudes of 0.7%, 0.9%, 1.3% and 1.5%. At the strain of magnitude 0.5%, the alloy exhibits a cyclic hardening characteristic in the initial stage and then a stress constant remaining in the late stage. The hysteresis loop is symmetrical in shape at the strain magnitude of 0.5%, and becomes asymmetrical due to the twinning-detwinning process when the strain magnitude increases. The shape difference of the hysteresis loops between the low and high strain magnitudes was discussed in terms of the differential deformation mechanisms.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Transactions of Nonferrous Metals Society of China - Volume 23, Issue 6, June 2013, Pages 1589-1594