کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7983085 | 1514767 | 2013 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
An examination of microstructural evolution in a Cu-Ni-Si alloy processed by HPT and ECAP
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Experiments were conducted to evaluate the evolution of hardness and microstructure in a commercial Cu-2.5Ni-0.6Si alloy (in wt%) after processing using High-Pressure Torsion (HPT) at room temperature with an imposed pressure of 6.0 GPa and Equal-Channel Angular Pressing (ECAP) at 423 K using a channel angle of 135°. Hardness measurements, X-ray diffraction and transmission electron microscopy (TEM) were used for microstructural evaluation and the results show a general consistency between these various techniques. The changes in the crystallite size and the dislocation structure as a function of the number of HPT revolutions and ECAP passes are discussed and compared with the results of the TEM observations. The detailed microstructural observations show a gradual evolution with increasing numbers of revolutions and passes with a saturation after 3 turns of HPT but with no saturation attained in ECAP even after 12 passes because of the lower imposed strain.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 576, 1 August 2013, Pages 149-155
Journal: Materials Science and Engineering: A - Volume 576, 1 August 2013, Pages 149-155
نویسندگان
Abdel Yazid Khereddine, Fayçal Hadj Larbi, Megumi Kawasaki, Thierry Baudin, Djamel Bradai, Terence G. Langdon,