کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1599695 1515844 2015 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Deformation mechanism of Ni54Mn25Ga20.9Gd0.1 high-temperature shape memory alloy
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Deformation mechanism of Ni54Mn25Ga20.9Gd0.1 high-temperature shape memory alloy
چکیده انگلیسی
Ni54Mn25Ga20.9Gd0.1 polycrystalline high-temperature shape memory alloy displayed high compressive fracture strain of 24.6% and large shape memory effect of 7.5%. However, its deformation mechanism was still unknown. In this paper, the structure revolution characterized by XRD and TEM indicated a new deformation mechanism different before was found. The deformation process of Ni54Mn25Ga20.9Gd0.1 alloy could be divided into four stages, including elastic deformation of non-modulated tetragonal martensite (T), stress-induced T to seven-layered modulated martensite (7 M) transformation, variants reorientation of 7 M, and elastic-plastic deformation of reoriented 7 M. The 7 M formed by compression deformation disappeared completely after heating to the temperature above Af.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Intermetallics - Volume 67, December 2015, Pages 52-55
نویسندگان
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