کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1576250 | 1514772 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microstructures and mechanical properties of the Mg-8Gd-4Y-Nd-Zn-3Si (wt%) alloy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Microstructures and mechanical properties of Mg-8Gd-4Y-Nd-Zn-3Si alloy were systematically investigated using OM, SEM, XRD, TEM, hardness measurements, tensile and resonance test. The as-cast microstructure consists of α-Mg, Mg3(GdYZn), Mg12(GdY)Zn, Mg2Si, Gd5Si3 and YSi2 phases. The long period stacking ordered (LPSO) structure is found in the as-cast sample, which disappears after solution treatment. The mechanical properties of the extruded-T5 alloy are as follows: Young's modulus E=58.5 GPa, yield tensile strength Ï0.2=328 MPa, ultimate tensile strength Ïb=386 MPa and elongation δ=5.9%. The high Young's modulus of the alloy is attributed to the existence of Mg2Si, Gd5Si3 and YSi2 compounds with high Young's modulus. The weakening of age hardening response is ascribed to the formation of vast Gd5Si3 and YSi2 compounds, which consumed plenty of rare earth atoms in the matrix and decreased the amount of βⳠand βⲠprecipitates.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 571, 1 June 2013, Pages 19-24
Journal: Materials Science and Engineering: A - Volume 571, 1 June 2013, Pages 19-24
نویسندگان
Jilong Hu, Xinming Zhang, Changping Tang, Yunlai Deng, Zhaoyang Liu, Liu Yang,