کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10646110 | 1001215 | 2011 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Texture and mechanical properties of ultrafine-grained Mg-3Al-1Zn alloy sheets prepared by high-ratio differential speed rolling
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
ⶠThe ultrafine grained AZ31 alloy with the mean grain size of 1 μm could be produced by feeding the cold AZ31 sheet to the hot rolls set at the speed ratio of 3 for a thickness reduction of 73% through the two-step rolling process. ⶠThe analysis of texture characteristics suggested that the grain refining during the HRDSR process proceeded by continuous dynamic recrystallization. The basal texture intensity and the rotation of basal angles depended on amount of shear deformation and rolling temperature. ⶠGrain-size strengthening and basal-texture strengthening contribute to the high strength achieved after HRDSR. ⶠThe ultrafine grained AZ31 showed a relatively large post-uniform elongation compared to the as-recieved one due to increased strain rate sensitivity exponent and suppressoin of inhomogeneous twinning. ⶠBy annealing the ultrafine grained AZ31 properly, a bimodal grain size distribution could be obtained, leading to significant improvement of uniform elongation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 528, Issue 3, 25 January 2011, Pages 874-879
Journal: Materials Science and Engineering: A - Volume 528, Issue 3, 25 January 2011, Pages 874-879
نویسندگان
W.J. Kim, H.W. Lee, S.J. Yoo, Y.B. Park,