کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
778346 1463791 2012 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Phase transformations in the proximity of TiC precipitates in a NiTi matrix during fatigue
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Phase transformations in the proximity of TiC precipitates in a NiTi matrix during fatigue
چکیده انگلیسی

Shape memory alloys are continuously spreading into new applications due to their multi-functional properties. During production, carbon precipitates form, which trigger premature fatigue structural failure. This study employs two continuum models for shape memory alloys to simulate the phase transformation and the stress distribution around a hard defect in a shape memory matrix. At the interface of the components, high stresses localize which lead to localized phase transformations. These phase transformations propagate in a criss-cross pattern during the loading half-cycle. During the unloading half-cycle the transformed areas recede and the most remnant transformation area remains at the interface. Concluding, defects in shape memory alloys significantly localize phase transformations.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Fatigue - Volume 41, August 2012, Pages 72–82
نویسندگان
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