کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1582451 | 1514875 | 2008 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Structure and properties of severely cold-rolled and annealed Ti-Ni shape memory alloys
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The substructure and structure formation as well as the mechanical and functional properties of thermomechanically treated Ti-50.7 at.%Ni and Ti-50.0 at.%Ni alloys were studied using transmission electron microscopy and mechanical testing. A low-temperature thermomechanical treatment is carried out by rolling at room temperature in a true strain range e = 0.3-1.9. It is shown that the severe plastic deformation of Ti-Ni alloys results in a partial material amorphization and in the subsequent formation of a nanocrystalline austenite structure during post-deformation annealing. As a result, the completely recoverable strain and recovery stress become much higher than the values reachable using traditional low-temperature thermomechanical treatment with post-deformation annealing which creates a polygonized dislocation substructure.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volumes 481â482, 25 May 2008, Pages 114-118
Journal: Materials Science and Engineering: A - Volumes 481â482, 25 May 2008, Pages 114-118
نویسندگان
S.D. Prokoshkin, V. Brailovski, K.E. Inaekyan, V. Demers, I.Yu. Khmelevskaya, S.V. Dobatkin, E.V. Tatyanin,