کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7973353 | 1514626 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The texture dependence of strength in slip and twinning predominant deformations of Mg-3Al-1Zn alloy
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In the present study, the effect of different (0002) distributions (<0002> // ND (MT texture) and <0002> // ND together with <0002> // RD (BT texture)) on strength of slip and twinning predominant deformations of a Mg AZ31 plate was systematically studied. The results show that the tensile yield strengths along the TD are similar in the two textures, but yield strength in compression along the TD is obviously higher in BT texture than in MT texture. Here, TD, RD and ND refer to the transverse direction, rolling direction and normal direction of the AZ31 plate, respectively. An analysis on Schmid factors demonstrates that the different compression yield strengths in the two texture mainly results from their different boundary obstacle effect against {101Ì
2} twinning. The mechanism was further analyzed by a compound use of the activation stress difference of slip/twinning (ÎStress) and geometrical compatibility factor (mâ²) between neighboring grains. A lower ÎStress or a higher mâ² mean a lower boundary obstacle effect. There is a similar ÎStress in the two texture under compression, but an obvious lower mâ² in BT texture than that in MT texture. The lower mâ² in BT texture than in MT texture leads to a higher boundary obstacle effect and the resultant higher compressive yield strength in BT texture. It is found that the presence of a large number of neighboring grains with a high angle between their c-axes in BT texture mainly accounts for the lower mâ².
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 717, 21 February 2018, Pages 34-40
Journal: Materials Science and Engineering: A - Volume 717, 21 February 2018, Pages 34-40
نویسندگان
Lingyu Zhao, Yunchang Xin, Yang Wu, Qing Liu,