کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
794771 902549 2011 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Determination of interfacial heat-transfer coefficient during investment-casting process of single-crystal blades
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
Determination of interfacial heat-transfer coefficient during investment-casting process of single-crystal blades
چکیده انگلیسی

A single-crystal hollow turbine blade was taken as the typical part to estimate the interfacial heat-transfer coefficient (IHTC) during investment-casting process. The experimental scheme was followed to measure the temperature distributions during the casting process by the tungsten–rhenium (W–Re) thermocouples. Using the finite-element methodology and the measured temperatures during the casting process, the time-dependent interfacial heat-transfer coefficient was studied by inverse heat-conduction analysis. The empirical formula for the time-dependent interfacial heat-transfer coefficient can be established. The calculation results are in good agreement with the experimental results, and the accuracy of the casting numerical simulation is improved effectively.


► The IHTC during single crystal blade investment casting process is studied.
► The time-dependent IHTC is investigated by inverse heat-conduction analysis.
► Formula of time-dependent interfacial heat transfer coefficient is established.
► The accuracy of the casting numerical simulation is improved effectively.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Materials Processing Technology - Volume 211, Issue 12, December 2011, Pages 2123–2131
نویسندگان
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