کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1636470 1516952 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of Nd and rotary forging on mechanical properties of AZ71 Mg alloys
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Effects of Nd and rotary forging on mechanical properties of AZ71 Mg alloys
چکیده انگلیسی
The effects of Nd addition on the mechanical properties and plastic deformability of AZ71 Mg alloys were investigated. 0.5%-2.0% (mass fraction) Nd was added to AZ71 Mg alloys. The grain size and the amount of brittle β;-Mg17Al12 phase reduce with increasing the Nd addition, while nanosized AlxNdy precipitates form. In combination with 32% rotary forging and subsequent annealing, the grain size of Nd-added AZ71 Mg alloys reduces greatly from over 350 μm to below 30 μm. Both tensile strength and ductility increase with the Nd addition up to 1.0%. The addition of Nd beyond 1.0% leads to the aggregations of rod-shaped Al11Nd3 and blocky Al2Nd precipitates, thereby deteriorating both strength and ductility. The 1.0% Nd-added AZ71 Mg alloy shows tensile strength up to 253 MPa and elongation of 10.7%. It is concluded that adding 1.0% Nd to AZ71 Mg alloy yields the optimum toughness, whether under as-cast or rotary forging and annealing conditions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Transactions of Nonferrous Metals Society of China - Volume 25, Issue 10, October 2015, Pages 3223-3231
نویسندگان
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