کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
245515 1428221 2016 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Forecasting in the presence of microstructural changes for the case of P91 steel after long-term ageing
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Forecasting in the presence of microstructural changes for the case of P91 steel after long-term ageing
چکیده انگلیسی

The statistical analysis of experimental data was presented and the precipitate diameter forecast for selected steel grade was developed in this paper. The investigations of changes in the material microstructure were carried out under high-temperature conditions. Therefore, this material was characterised by increasing instability over time. Long-term ageing tests were carried on P91 steel for 103, 104, 3 × 104 and 7 × 104 h at 600 and 650 °C. The recorded microstructure images allowed the quantitative analysis of precipitates that occur mainly at the former austenite grain boundaries and martensite laths. The statistical distribution forecast was developed for the ageing time of 105 h. The forecasting under the conditions of material structure changes requires repealing classic assumptions adopted in the theory of prediction. Such methodology was proposed in this article. This article is the basis for the development of further research in this field. The proposed methodology can be used for diagnostic purposes and in the equipment failure risk assessment.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Archives of Civil and Mechanical Engineering - Volume 16, Issue 4, September 2016, Pages 813–824
نویسندگان
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