کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1502895 | 993438 | 2006 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The effect of surface orientation on oxidation-induced growth strains in single crystal NiAl: An in situ synchrotron study
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The effect of surface orientation on oxidation-induced growth strains in single crystal NiAl: An in situ synchrotron study The effect of surface orientation on oxidation-induced growth strains in single crystal NiAl: An in situ synchrotron study](/preview/png/1502895.png)
چکیده انگلیسی
The evolution of oxidation-induced growth stresses in single crystal stoichiometric NiAl has been studied; it is specimen dependent and also depends on crystallographic orientation. Epitaxial issues at the NiAl/Al2O3 interface appear to govern initial formation of γ- or θ-Al2O3 and its subsequent transformation to the stable and denser α-Al2O3 polymorph. This transformation generates tensile stresses in α-Al2O3, which relax with further oxidation. Room temperature residual stresses are large, ∼3.3 GPa, and compressive. Confocal photo-stimulated microspectroscopy studies of these residual compressive stresses have revealed large spatial variabilities, which are also attributed to epitaxial issues at the NiAl/Al2O3 interfaces.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Scripta Materialia - Volume 54, Issue 11, June 2006, Pages 1907–1912
Journal: Scripta Materialia - Volume 54, Issue 11, June 2006, Pages 1907–1912
نویسندگان
A.H. Heuer, A. Reddy, D.B. Hovis, B. Veal, A. Paulikas, A. Vlad, M. Rühle,