کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10620417 988622 2011 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Bimodal nanocrystallization of NiTi shape memory alloy by laser shock peening and post-deformation annealing
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Bimodal nanocrystallization of NiTi shape memory alloy by laser shock peening and post-deformation annealing
چکیده انگلیسی
In this paper, surface nanocrystallization of NiTi intermetallic alloy by a novel method is reported. The NiTi alloy is processed by laser shock peening (LSP) and controlled annealing. The microstructure of the NiTi alloy after processing is characterized by transmission electron microscopy. At the top surface of the material, a nanostructure with bimodal grains is obtained. The mechanism of the formation of the bimodal microstructure is discussed. At the material subsurface, deformation twins are generated by LSP and retained after controlled annealing. Tensile test results showed that both strength and ductility are significantly improved through LSP and controlled annealing.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 59, Issue 19, November 2011, Pages 7219-7227
نویسندگان
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