کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1580757 | 1514848 | 2009 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Analysis of long-term creep curves by constitutive equations
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Analysis of long-term creep curves by constitutive equations Analysis of long-term creep curves by constitutive equations](/preview/png/1580757.png)
چکیده انگلیسی
Long-term creep curves up to the secondary stage (time >105Â h) for carbon steel, 1.25Cr-0.5Mo-Si steel, 2.25Cr-1Mo steel, and SUS316 steel were analyzed by means of constitutive creep equations. A power-law equation well fitted the actual long-term creep curves for all the steels, whereas the exponential-law equation, logarithmic-law equation, and Blackburn's equation could not represent the beginning of primary creep during long-term testing. All the equations reproduced short-term creep curves for all the steels. For carbon steel, the parameters obtained from data analysis at higher stresses were extrapolated to lower stresses to predict the long-term creep curve. However, none of the creep curves predicted by the equations agreed with the actual long-term creep curves, although the prediction of the power-law equation was better than those of the other equations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volumes 510â511, 15 June 2009, Pages 190-194
Journal: Materials Science and Engineering: A - Volumes 510â511, 15 June 2009, Pages 190-194
نویسندگان
K. Sawada, M. Tabuchi, K. Kimura,