کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8022077 | 1517279 | 2013 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Rate dependent damping of single crystal CuAlNi shape memory alloy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We report the effects of loading rate and ambient condition on the damping capacity (energy dissipation) of superelastic CuAlNi single crystal shape memory alloy during stress-induced martensitic phase transformation. The roles of latent heat release/absorption and heat transfer between the specimen and the ambient in the specimenâ²s temperature and stress variations were investigated. The damping capacity in a tensile loading-unloading cycle was measured in the strain rate (εÌ) range of 0.0001/s - 1/s under three ambient conditions (still air and flowing air with velocities of 5 m/s and 17 m/s). Both the experiments and analysis showed that it is the temperature variation that makes the damping capacities change non-monotonically with the strain rate and that the maximum damping capacity (damping peak) is achieved when the loading time (tT) is close to the characteristic heat transfer time (th).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 109, 15 October 2013, Pages 287-290
Journal: Materials Letters - Volume 109, 15 October 2013, Pages 287-290
نویسندگان
Hao Yin, Yan Yan, Yongzhong Huo, Qingping Sun,