کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1599818 1515850 2015 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Grain size effect on the martensitic transformation of Ni50Mn25Ga17Cu8 high-temperature shape memory alloy
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Grain size effect on the martensitic transformation of Ni50Mn25Ga17Cu8 high-temperature shape memory alloy
چکیده انگلیسی


• Grain size effect on martensitic transformation of Ni50Mn25Ga17Cu8 was revealed.
• The martensitic transformation temperatures were decreased by the smaller grain size.
• The average activation energy of transformation was higher for smaller grains.

Single crystal, coarse-grained and fine-grained polycrystals of Ni50Mn25Ga17Cu8 high-temperature shape memory alloy were prepared. Grain size effect on the martensitic transformation was investigated. Compared with the single crystal, the martensitic transformation temperatures were slightly decreased by coarse grains, but were greatly decreased by fine grains. Strong grain size dependence of the kinetics of the martensitic transformation was monitored. The average activation energy of the transformation required for the fine-grained polycrystal was nearly four times of that for the single crystal.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Intermetallics - Volume 61, June 2015, Pages 42–46
نویسندگان
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