کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7979734 | 1514726 | 2014 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
On the elasto-viscoplastic behavior of the Ti5553 alloy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
The elastoviscoplastic behavior of the Ti5553 alloy is characterized and compared to the classical Ti-6Al-4V alloy. The true stress-strain curves are determined based on tensile tests performed under different strain rates at room temperature and at 150 °C, from which the elastic constants and the parameters of a Norton-Hoff viscoplastic model are identified. The strength of the Ti5553 alloy is 20-40% higher than the strength of the Ti-6Al-4V alloy. The Ti5553 alloy constitutes thus a promising candidate for advanced structural applications. In view of modeling structural applications of forming operations, the elastic and plastic initial anisotropy of the two alloys is investigated by combining compression on cylinders with elliptical sections, uniaxial tensile tests in different material directions, plane strain and shear tests. The initial anisotropy of the different alloys is very weak which justifies the modeling of the mechanical behavior with an isotropic yield surface. The identified elastoviscoplastic model is validated by comparing experimental results with FE predictions both on cylindrical notched specimens subjected to tensile tests and on flat specimens subjected to plane strain conditions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 617, 3 November 2014, Pages 97-109
Journal: Materials Science and Engineering: A - Volume 617, 3 November 2014, Pages 97-109
نویسندگان
Mohamed Ben Bettaieb, Thibaut Van Hoof, Thomas Pardoen, Philippe Dufour, Astrid Lenain, Pascal J. Jacques, Anne Marie Habraken,