کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10227037 1701332 2018 27 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermal growth of exclusive alumina scale on a TiAl based alloy: Shot peening effect
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Thermal growth of exclusive alumina scale on a TiAl based alloy: Shot peening effect
چکیده انگلیسی
Shot peening, although generally accepted as a useful surface treatment method to improve oxidation resistance of Ni-, Co- and Fe-based alloys, has been less applied to TiAl based alloys. This work shows that a shot peening treatment converts the Ti-45Al-2Nb-2Mn-1B alloy from thermally growing TiO2-Al2O3 mixed oxides to an exclusive Al2O3 in air at 900 °C. The basic reason for this is that the shot peening catalyzes formation of an α-Al2O3 thin film, which prevents Ti of the alloy from oxidation at the high temperature. The slow oxidation of the shot-peened alloy mitigates the degradation of typical γ/α2 lamellar microstructure.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Corrosion Science - Volume 143, October 2018, Pages 76-83
نویسندگان
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