کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
777909 | 1463840 | 2008 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of Al3Sc particle size and precipitate-free zones on fatigue behavior and dislocation structure of an aged Al–Mg–Sc alloy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effects of Al3Sc particle size and precipitate-free zones on fatigue behavior and dislocation structure of an aged Al–Mg–Sc alloy Effects of Al3Sc particle size and precipitate-free zones on fatigue behavior and dislocation structure of an aged Al–Mg–Sc alloy](/preview/png/777909.png)
چکیده انگلیسی
Al–Mg–Sc alloy polycrystals have been cyclically deformed at room temperature under constant stress amplitudes. Cyclic softening after initial hardening is found in specimens with small particles of 4 nm, but no cyclic softening takes place in specimens with large particles of 11 nm. Transmission electron microscopy observations reveal that dislocations are uniformly distributed under all applied stress amplitudes in the specimens containing large particles, whereas clearly developed slip bands are formed in the cyclically softened specimens bearing small particles. Two-step aging causes a decrease in the width of precipitate-free zones in the large-particle specimen, resulting in the improvement of fatigue life.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Fatigue - Volume 30, Issue 4, April 2008, Pages 635–641
Journal: International Journal of Fatigue - Volume 30, Issue 4, April 2008, Pages 635–641
نویسندگان
C. Watanabe, R. Monzen, K. Tazaki,