کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10142225 | 1646091 | 2019 | 28 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Type and density of dislocations in a plastically deformed long-period stacking ordered magnesium alloy
ترجمه فارسی عنوان
نوع و تراکم جابجایی در یک انبساط پلاستیک انباشته شده طولانی آلیاژ منیزیم مرتب شده است
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
چکیده انگلیسی
The density and type of dislocations were studied in a plastically deformed long-period stacking ordered (LPSO) phase of a Mg89Y7Zn4 (at.%) alloy. The volume fraction of the LPSO phase was as high as â¼85%. The plastic deformation was carried out by uniaxial compression up to the strain of â¼25% in both as-cast and extruded states. The order of magnitude of the dislocation density was â¼1014â¯mâ2 after compression to the strain of â¼25% for both as-cast and extruded materials. It was also found that most of the dislocations formed in the LPSO phase during extrusion and compression were of -type. The as-cast sample did not exhibit a strong crystallographic texture, but extrusion caused a texture in which the normal vector of the basal plane was perpendicular to the extrusion axis. The texture developed during extrusion yielded an anisotropic evolution of the dislocation density during subsequent compression. Namely, the density of dislocations developed during compression was lower when the deformation was carried out parallel to the extrusion axis.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 771, 15 January 2019, Pages 629-635
Journal: Journal of Alloys and Compounds - Volume 771, 15 January 2019, Pages 629-635
نویسندگان
Moustafa El-Tahawy, Kristián Máthis, Gerardo Garcés, Tsubasa Matsumoto, Michiaki Yamasaki, Yoshihito Kawamura, JenÅ Gubicza,