کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1581907 | 1514865 | 2008 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Determining the optimal stacking fault energy for achieving high ductility in ultrafine-grained Cu-Zn alloys
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Bulk ultrafine-grained (UFG) materials produced by severe plastic deformation (SPD) often have low ductility. A previous study demonstrated the possibility of lowering the stacking fault energy to simultaneously increase the strength and ductility. This paper demonstrates, there exists an optimal stacking fault energy for the best ductility in UFG Cu-Zn alloys processed by the same SPD processing. When the stacking fault energy is too low, the grain size lies below 15Â nm after SPD processing and the stacking faults are saturated so that it is difficult to accumulate dislocations and deformation twins during the subsequent tensile testing. These results provide significant guidance for the future design of UFG and nanocrystalline alloys for achieving high ductilities.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 493, Issues 1â2, 15 October 2008, Pages 123-129
Journal: Materials Science and Engineering: A - Volume 493, Issues 1â2, 15 October 2008, Pages 123-129
نویسندگان
Y.H. Zhao, X.Z. Liao, Z. Horita, T.G. Langdon, Y.T. Zhu,