کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1649006 1007571 2011 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Elevated-temperature plasticity and mechanical properties of a rare earth-modified Mg–Zn–Al alloy
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Elevated-temperature plasticity and mechanical properties of a rare earth-modified Mg–Zn–Al alloy
چکیده انگلیسی

The elevated-temperature plasticity and flow behavior of an Er-modified, heat-resistant ZA73 alloy was evaluated by thermal simulation. The results showed that the addition of Er to ZA73 alloy notably improves the deformability and higher strain rate and temperature favors hot deformation. Bars with sound surface quality were successfully extruded at 350 °C and a strain rate of ~ 0.1 s− 1. Furthermore, dynamic precipitation of nano-sized spherical τ phase was found to occur uniformly in the α-Mg matrix during hot extrusion, which is considered helpful to both strength and plasticity enhancement. The yield strength and ultimate tensile strength of the as-extruded bars reached 240–265 MPa and 355–360 MPa, respectively, while maintaining a large elongation rate of 18–19.5%.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 65, Issue 6, 31 March 2011, Pages 944–947
نویسندگان
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