Embrittlement of austenitic stainless steel welds
نویسندگان
چکیده
منابع مشابه
Interval Dependant Thresholding based De-noising of Ultrasonic TOFD Signals from Austenitic Stainless Steel Welds
Austenitic stainless steel has structural values in almost all industries. It is one of the most widely used materials. Qualitative assessment of such important components is of greater importance in very sensitive applications such as nuclear reactor vessels. Ultrasonic based Time of Flight diffraction is a reliable technique in testing the materials for many types of defects in welds. Echo si...
متن کاملFourier Analysis of Ultrasonic TOFD Signals for Defect Detection in Austenitic Stainless Steel Welds
Non Destructive testing of structural materials is an important activity in many industries. Ultrasonic NDT is one such method widely used in this field. Pulse Echo and Through Transmission are conventional testing techniques which use reflected and transmitted sound energy respectively. But these techniques are highly dependent on defect orientation. Time of Flight Diffraction (TOFD) is a rece...
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Plastic pre-strains were applied to the metastable 304L austenitic stainless steel at both room temperature (20 °C) and higher temperatures (i.e., 50, 80 and 100 °C), and then the hydrogen embrittlement (HE) susceptibility of the steel was evaluated by cathodically hydrogen-charging and tensile testing. The 20 °C pre-strain greatly strengthened the steel, but simultaneously significantly increa...
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One of the most important subjects in nuclear power plants is sizing of flaws which are detected during InService Inspection (ISI), since reliability of flaw sizing is very important to estimate the life of the structure or pressure equipment. The most difficult matter for applying the flaw sizing techniques mentioned above is how to identify the flaw tip signal, especially in the case of natur...
متن کاملFinite Element Modeling of Austenitic Stainless Steel Residual Stresses Pipe Girth Welds
Three-dimensional finite element modeling of residual stresses in a girth-welded pipe is presented in this paper, with an emphasis on modeling procedures for the global residual stress characteristics. The shell element model with a heat source moving along the circumferential joint is demonstrated to be cost effective and capable of predicting the global residual stress features. Transient res...
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ژورنال
عنوان ژورنال: Journal of Nondestructive Evaluation
سال: 1996
ISSN: 0195-9298,1573-4862
DOI: 10.1007/bf00732040