کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9704760 | 1464188 | 2005 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Impact strength properties of nickel-based refractory superalloys at normal and elevated temperatures
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
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چکیده انگلیسی
The dynamic yield and fracture stress of two refractory alloys were measured under shock-wave loading at normal and elevated (up to 680°C) temperatures. The tested materials were polycrystalline nickel-based superalloy Inconel IN738LC and PWA 1483 Ni-Co-Fe alloy in quasi-monocrystalline state. Both alloys are used as turbine blade materials for the hot first stages of gas turbines. The alloys exhibit non-monotonous dependence of the dynamic yield strength upon temperature with an abrupt increase in the temperature interval of 550-600°C. The dynamic tensile strength, in general, is less sensitive to temperature and shows less pronounced increase in the vicinity of 570°C. The observed anomalies of the dynamic strength properties correlate with anomalies in the heat capacity which are associated with the equilibrating of the short-range order in the γ-matrix of the alloys.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Impact Engineering - Volume 31, Issue 1, January 2005, Pages 41-54
Journal: International Journal of Impact Engineering - Volume 31, Issue 1, January 2005, Pages 41-54
نویسندگان
E.B. Zaretsky, G.I. Kanel, S.V. Razorenov, K. Baumung,