کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1451395 988772 2005 19 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Elastic constants of bcc austenite and 2H orthorhombic martensite in CuAlNi shape memory alloy
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Elastic constants of bcc austenite and 2H orthorhombic martensite in CuAlNi shape memory alloy
چکیده انگلیسی

Elastic constants of cubic austenite and orthorhombic 2H martensite phases in the Cu–Al–Ni shape memory alloy were determined by ultrasonic pulse-echo technique using multiple single crystal specimens and a novel optimization based evaluation method that minimizes the uncertainty stemming from experimental errors as well as experimental effort. Multiple martensitic single crystals were prepared from the austenite crystal by a dedicated deformation technique. Taking advantage of the fact that the elastic constants of the austenite and 2H martensite phase were evaluated on the same piece of material, soft acoustic modes and elastic properties of both phases were compared taking into account the lattice correspondence. It is found that the 2H martensite crystal partially inherits the soft acoustic modes of the austenite and hence its elastic properties.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 53, Issue 13, August 2005, Pages 3643–3661
نویسندگان
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