کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1480937 1510436 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of the isothermal process at glass transition temperature on growths of Frank–Kasper polyhedral clusters in TiAl3 alloy
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Influence of the isothermal process at glass transition temperature on growths of Frank–Kasper polyhedral clusters in TiAl3 alloy
چکیده انگلیسی


• The first 50 ns isothermal process increases numbers and connectivities of clusters.
• Z16 FK cluster and its connections notably increased after the isothermal process.
• Z16 FK cluster can link with more icosahedral clusters than other FK clusters.
• Five Z16 FK clusters form pentagonal junction of icosahedral clusters.
• The second 50 ns isothermal process increases number of pentagonal junction.

A simulation study has been performed for the isothermal process of liquid TiAl3 alloy during rapid solidification by using molecular dynamics method. Several structural characterization methods are adopted to characterize and analyze the configurations and connections of clusters in this investigation. The FK polyhedral clusters and their connections with icosahedral clusters and themselves notably increase after isothermal processes at glass transition temperature Tg, especially for Z16 FK polyhedral cluster. Visualization technologies are applied to trace the growths of nano-clusters during rapid quenching and isothermal processes. It is found that the pentagonal connected clusters of Z16 FK polyhedral clusters act as the junction closely connects nearby icosahedral clusters in the amorphous structure. Moreover, the second 50 ns isothermal running time at Tg significantly promotes the growths of the pentagonal junctions in the system.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 406, 15 December 2014, Pages 95–101
نویسندگان
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