کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1479825 991428 2016 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Quantification of the strengthening effect of rare earth elements during hot deformation of Mg-Gd-Y-Zr magnesium alloy
ترجمه فارسی عنوان
کوانتومی اثر تقویت عناصر خاکی کمیاب در هنگام تغییر شکل داغ آلیاژ منیزیم Mg-Gd-Y-Zr
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی

The flow stress of Mg-Gd-Y-Zr, Mg-Al-Zn, and Mg-Zn-Zr magnesium alloys during hot deformation were correlated to the Zener–Hollomon parameter through analyses based on the proposed physically-based and apparent approaches. It was demonstrated that the theoretical exponent of 5 and the lattice self-diffusion activation energy of magnesium (135 kJ/mol) can be set in the hyperbolic sine law to describe the peak flow stresses. As a result, the influence of rare earth elements, gadolinium (Gd) and yttrium (Y), upon the hot working behavior was readily characterized by the proposed approach, which was not possible by the conventional apparent approach. It was shown quantitatively that the rare earth addition exerts a profound effect on the hot strength and hence on the creep resistance.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Materials Research and Technology - Volume 5, Issue 1, January–March 2016, Pages 1–4
نویسندگان
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