کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1621762 | 1516390 | 2009 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Spherical shape of γ-Mg17Al12 precipitates in AZ91 magnesium alloy processed by equal-channel angular pressing
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
The microstructure investigations of the AZ91 alloy after equal-channel angular pressing (ECAP) were presented. Solution annealed billets were processed at a 0.16 mm s−1 pressing rate and temperatures of 623 and 553 K. The average grain size was reduced from 150 μm initially to a final value of 10 μm. The microstructure analyses revealed γ-Mg17Al12 precipitates with a spherical morphology located particularly inside the equiaxal grains of an α-solid solution. Additionally, different shapes of γ precipitates, plate-like or rod-like (typical for heat treatment processes) were not observed. The spherical shape of γ precipitates was obtained due to correlate magnesium matrix alloy deformation during pressing with precipitation process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 487, Issues 1–2, 13 November 2009, Pages 263–268
Journal: Journal of Alloys and Compounds - Volume 487, Issues 1–2, 13 November 2009, Pages 263–268
نویسندگان
K.N. Braszczyńska-Malik,