کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1548038 997716 2015 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microstructural evolution and mechanical behavior of metastable β-type Ti–30Nb–1Mo–4Sn alloy with low modulus and high strength
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Microstructural evolution and mechanical behavior of metastable β-type Ti–30Nb–1Mo–4Sn alloy with low modulus and high strength
چکیده انگلیسی

A metastable β-type Ti–30Nb–1Mo–4Sn alloy with ultralow elastic modulus and high strength was fabricated. Under the solution treatment state, the Ti–30Nb–1Mo–4Sn alloy possesses low yield strength of about 130 MPa owing to the presence of the coarse α′′ martensitic laths. Upon a cold rolling and annealing process, the martensitic transformation from β to α′′ is significantly retarded due to the inhibitory effect of grain boundaries and dislocations. As a result, the metastable β phase with low total amount of β-stabilizers is retained to room temperature, giving rise to a low modulus of 45 GPa. Meanwhile, nano-sized α precipitates and dislocation tangles play a key role in strengthening the Ti–30Nb–1Mo–4Sn alloy, resulting in a high tensile strength of ~1000 MPa. With low elastic modulus and high strength, the metastable β-type Ti–30Nb–1Mo–4Sn alloy could be a potential candidate for biomedical materials.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Progress in Natural Science: Materials International - Volume 25, Issue 5, October 2015, Pages 414–418
نویسندگان
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