کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5457694 | 1515827 | 2017 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Comparative study of R-phase martensitic transformations in TiNi-based shape memory alloys induced by point defects and precipitates
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Comparative study of R-phase martensitic transformations in TiNi-based shape memory alloys induced by point defects and precipitates Comparative study of R-phase martensitic transformations in TiNi-based shape memory alloys induced by point defects and precipitates](/preview/png/5457694.png)
چکیده انگلیسی
We studied the influence of point defects (Fe) and precipitates (Ti3Ni4) on the characteristics of R-phase martensitic transformation by comparing the transport and thermal properties of as-quenched Ti50Ni46Fe4 and annealed Ti48.7Ni51.3 shape memory alloys. Both alloys undergo a weak first-order R-phase transformation with a small thermal hysteresis (less than 7Â K) and non-zero transformation strain, suggesting the introduction of point defects and precipitates lead to a stable R-phase in these alloys due to the defects induced local lattice deformations. Furthermore, our study revealed that the transition temperature, transformation width, and transformation strain of the investigated R-phase TiNi-based alloys are strongly affected by the induced defects. As a result, the annealed Ti48.7Ni51.3 has a higher transition temperature than that of Ti50Ni46Fe4, as expected.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Intermetallics - Volume 84, May 2017, Pages 130-135
Journal: Intermetallics - Volume 84, May 2017, Pages 130-135
نویسندگان
P.C. Chang, M.L. Ko, B. Ramachandran, Y.K. Kuo, C. Chien, S.K. Wu,