کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1502713 993431 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fragility and thermal stability of Pt- and Pd-based bulk glass forming liquids and their correlation with deformability
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Fragility and thermal stability of Pt- and Pd-based bulk glass forming liquids and their correlation with deformability
چکیده انگلیسی

The fragility parameter m of (Pt or Pd)–(Ni, Cu)–P bulk metallic glasses (BMGs) was characterized and compared to other systems. The results indicate that the Pt65Ni15P25 alloy is the most fragile and thermally stable at the supercooled liquid state, thus is the most workable among the presently developed BMGs. To express the degree of workability, a deformability d∗=log[η(Tg∗)/η(Tx)] is introduced then correlated with m   and the reduced thermal stability ΔTrx∗=(Tx-Tg∗)/Tg∗. A master curve in term of η(Tg∗)/η(T) and m·[(T-Tg∗)/Tg∗] has been established for various BMGs, d∗ thus can be uniquely related to m·ΔTrx∗.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Scripta Materialia - Volume 54, Issue 12, June 2006, Pages 2023–2027
نویسندگان
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