کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1579574 1514829 2010 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
High-strength nanostructured Ti-12Mo alloy from ductile metastable beta state precursor
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
High-strength nanostructured Ti-12Mo alloy from ductile metastable beta state precursor
چکیده انگلیسی
In this study, the metastable beta Ti-12Mo (wt.%) alloy was synthesized by the cold crucible levitation melting (CCLM) method and then quenched in water from the beta domain. The tensile test carried out on the as-quenched alloy showed an important ductility reaching 45% of elongation before fracture. From the as-quenched metastable beta state, non-isothermal electrical resistivity and dilatometry measurements were carried out to detect the phase transition in order to control the nanophase precipitation sequence. After heating, XRD analysis and TEM observations revealed a very fine nano-scale omega and alpha precipitation in the beta matrix. Tensile test results indicated a very high strengthening effect after appropriate thermo-mechanical treatments, which was observed particularly huge after a two-step annealing process where a tensile strength as high as around 1600 MPa was obtained. This highly enhanced tensile strength was attributed to the complex intragranular nanostructure observed by TEM consisting of two-scale alpha nanoprecipitates inside sub-micrometer beta grains.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 527, Issues 16–17, 25 June 2010, Pages 4262-4269
نویسندگان
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