کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7899509 | 1510168 | 2016 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A comparison of repetitive corrugation and straightening and high-pressure torsion using an Al-Mg-Sc alloy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A comparative study was conducted to evaluate the influence of two different severe plastic deformation (SPD) processes: repetitive corrugation and straightening (RCS) and high-pressure torsion (HPT). Samples of an Al-3Mg-0.25Sc alloy with an initial grain size of â¼150 μm were processed by RCS through 8 passes at room temperature either without any rotation during processing or with a rotation of 90° around the longitudinal axis between each pass. Thin discs of the alloy were also processed for up to 5 turns by HPT at room temperature. The results show that both procedures introduce significant grain refinement with average grain sizes of â¼0.6-0.7 μm after RCS and â¼95 nm after HPT. Measurements of the Vickers microhardness gave values of â¼128 after RCS and â¼156 after HPT. The results demonstrate that processing by HPT is the optimum processing technique in achieving both high strength and microstructural homogeneity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Materials Research and Technology - Volume 5, Issue 4, OctoberâDecember 2016, Pages 353-359
Journal: Journal of Materials Research and Technology - Volume 5, Issue 4, OctoberâDecember 2016, Pages 353-359
نویسندگان
Prabhakar M. Bhovi, Deepak C. Patil, S.A. Kori, K. Venkateswarlu, Yi Huang, Terence G. Langdon,