کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7991985 1516145 2018 23 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of TiB2 particles on artificial aging response of high-Li-content TiB2/Al-Li-Cu composite
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Effects of TiB2 particles on artificial aging response of high-Li-content TiB2/Al-Li-Cu composite
چکیده انگلیسی
The effect of TiB2 particles on artificial aging response of cast high-Li-content TiB2/Al-Li-Cu composite at 175 °C was investigated for the first time by a combination of various techniques, including transmission electron microscopy (TEM), scanning electron microscopy (SEM) and differential scanning calorimetry (DSC). We discovered that the nano-sized particles, in the shapes of hexagonal or equaixed, had a strong influence on mechanical properties and microstructural evolution during artificial aging process. With the introduction of TiB2 particles, the average grain size decreased significantly. The precipitations of θ′ and T1 precipitates were promoted in the reinforced composite, however, there was no obvious difference in the size and number density of δ′ precipitates between the unreinforced alloy and reinforced composite. DSC results showed that the addition of TiB2 did not change the precipitation sequence, although both precipitation and dissolution kinetics were altered. The reinforced composite revealed a remarkable improvement in mechanical properties.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 749, 15 June 2018, Pages 189-196
نویسندگان
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