کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7168298 | 1462968 | 2015 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Failure analysis on welded joints of 347H austenitic boiler tubes
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موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Failure analysis on welded joints of 347H austenitic boiler tubes Failure analysis on welded joints of 347H austenitic boiler tubes](/preview/png/7168298.png)
چکیده انگلیسی
Microstructural and thermo-mechanical analyses using the finite element method (FEM) were performed on the welded joint of 347H boiler tubes in a coal-fired power plant after 3600Â h of operation. The cracks in the failed tube started on the inner surface of the heat-affected zone (HAZ). This area had a high hardness value and volume fraction of strain-induced martensite. The plastic deformation around the crack was concentrated near the grain boundaries. This failure occurred as the stabilizing effect disappeared due to carbide dissolution in the heat-affected zone, and plastic deformation and tensile residual stress were formed at the inner side due to the solidification contraction of the outer bead.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Failure Analysis - Volume 57, November 2015, Pages 413-422
Journal: Engineering Failure Analysis - Volume 57, November 2015, Pages 413-422
نویسندگان
Han-sang Lee, Jine-sung Jung, Doo-soo Kim, Keun-bong Yoo,