کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7970547 | 1514388 | 2015 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Delamination of near-surface layer on cold rolled AlFeSi alloy during sheet forming
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Delamination of near-surface layer on cold rolled AlFeSi alloy during sheet forming Delamination of near-surface layer on cold rolled AlFeSi alloy during sheet forming](/preview/png/7970547.png)
چکیده انگلیسی
A near-surface layer existed on a cold rolled and annealed foil stock AlFeSi alloy due to severe shear strain during twin-roll casting and subsequent cold rolling. The near-surface layer, with a thickness up to ~Â 700Â nm and consisting of ultrafine grains with diameters up to 100Â nm and high population of voids/microcracks, was present as randomly distributed patches on the alloy surface. The grain boundaries within the near-surface layer were decorated by oxide particles and inclusions of lubricant residue, which reduce the ductility of the near-surface layer. During sheet forming, further shear deformation occurred in the near-surface region due to the friction caused by the sliding contact between the alloy sheet and the forming tool. The differences in the microstructure and the ductility between the near-surface layer and the underlying bulk alloy resulted in cracking within the near-surface layer and/or at the near-surface layer/bulk alloy interface, finally leading to the delamination of patches of the near-surface layer. The delamination generated flake-like alloy debris may significantly modify the property of forming lubricant and influence the tendency to galling during sheet forming.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Characterization - Volume 99, January 2015, Pages 109-117
Journal: Materials Characterization - Volume 99, January 2015, Pages 109-117
نویسندگان
J. Wang, X. Zhou, G.E. Thompson, J.A. Hunter, Y. Yuan,