کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5455576 1514639 2017 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhanced plasticity in a Ti-Ni-Nb-Zr shape memory bulk metallic glass composite with high Nb addition
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Enhanced plasticity in a Ti-Ni-Nb-Zr shape memory bulk metallic glass composite with high Nb addition
چکیده انگلیسی
In this work, we reported a new Ti-Ni-Nb-Zr bulk metallic glass composite with high Nb addition, which is composed of amorphous, β-Nb and shape memory B2-Ti(Ni, Nb) phases. The volume fraction of the amorphous phase in the rod specimen with a diameter of 1.5 mm was determined to be ~15 vol%. The room-temperature mechanical test suggested that the composite exhibited a significant engineering plastic strain of 22.1% and a maximum compressive strength of ~2400 MPa, together with a dominating strain-hardening behavior during the whole deformation process. The large plasticity of the material was contributed the pile-ups of dislocation and severe lattice distortion, as well as generation of abundant shear bands during deformation. This result provides a promising approach to improve the mechanical properties of metallic glasses through compositional and structural design.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 704, 17 September 2017, Pages 192-198
نویسندگان
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