کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1573550 1514684 2016 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of residual stress and grain boundary character on creep cracking in 2.25Cr-1.6W steel
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Effects of residual stress and grain boundary character on creep cracking in 2.25Cr-1.6W steel
چکیده انگلیسی
Effect of residual stresses on creep behavior was investigated using designed compact tension specimens in 2.25Cr-1.6W steel before and after heat treatment. The heat treatment was carried out to obtain partial austenitization microstructure and to cause zigzag configuration of grain boundaries. Residual stresses were generated ahead of crack root by loading in compression beyond yield and then unloading. A three-dimensional finite element model was developed to predict the evolution of creep damage and residual stress within the specimens during creep time. The extent of creep crack has also been assessed through destructive examination, providing validation for the creep damage prediction model. Fractal analysis was applied to quantitative determinate the correlation between the grain boundary configuration and creep behavior.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 659, 6 April 2016, Pages 188-197
نویسندگان
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