کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1622953 1516405 2009 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Solid solution strengthening behaviors in binary Mg–Y single phase alloys
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Solid solution strengthening behaviors in binary Mg–Y single phase alloys
چکیده انگلیسی

Solid solution effects on the mechanical behavior of binary Mg–Y single phase alloys have been investigated in a temperature range from ambient to 350 °C with yttrium contents between 0.20 and 1.88 at.%. At room temperature, the hardness increases with the increasing Y content as Hv0.5 (kg mm−2) = 31.12 + 13.23 Y (at.%). The yield strength increases linearly with cn, where c is the solute atom concentration and n = 1/2 or 2/3. However, the yield strength deviates from the cn power-law at temperature over 100 °C. This deviation observed in tensile tests over a temperature range 150–250 °C can be correlated with the dynamic strain ageing (DSA) effects due to the interaction between dislocations and solute Y atoms, which is evidenced by the serrated flow, as well as the local minimum and plateau in the temperature dependences of yield and ultimate strength. Other possible strengthening mechanisms have been also discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 472, Issues 1–2, 20 March 2009, Pages 234–240
نویسندگان
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